diff --git a/www/html/Admin/admin.css b/www/html/Admin/admin.css
index abf79b3..6ed5dc8 100644
--- a/www/html/Admin/admin.css
+++ b/www/html/Admin/admin.css
@@ -1078,27 +1078,61 @@ code {
   border-color: rgba(239, 68, 68, 0.25);
 }
 
-.game-timing-laser-slot--beam .game-timing-laser-preview {
+.game-timing-laser-slot--beam .game-timing-laser-preview--beam {
   position: relative;
+  flex-direction: column;
+  justify-content: stretch;
+  align-items: stretch;
+  min-height: clamp(200px, 34vh, 380px);
+  max-height: 420px;
+  width: 100%;
+  max-width: 76px;
+  margin-left: auto;
+  margin-right: auto;
+  padding: 0;
+  overflow: hidden;
 }
 
-.game-timing-laser-slot--beam .game-timing-laser-preview::after {
+.game-timing-laser-slot--beam .game-timing-laser-preview--beam::after {
   content: '';
   position: absolute;
   left: 50%;
-  top: 8%;
-  bottom: 8%;
-  width: 3px;
+  top: 3%;
+  bottom: 3%;
+  width: 4px;
   transform: translateX(-50%);
   border-radius: 2px;
-  background: linear-gradient(180deg, rgba(252, 165, 165, 0.15), rgba(239, 68, 68, 0.9), rgba(252, 165, 165, 0.15));
-  box-shadow: 0 0 14px rgba(239, 68, 68, 0.45);
+  background: linear-gradient(180deg, rgba(252, 165, 165, 0.15), rgba(239, 68, 68, 0.92), rgba(252, 165, 165, 0.15));
+  box-shadow: 0 0 16px rgba(239, 68, 68, 0.5);
   pointer-events: none;
-  opacity: 0.9;
+  opacity: 0.92;
+  z-index: 1;
 }
 
-.game-timing-laser-slot--beam .game-timing-laser-preview:has(.game-timing-laser-preview-img)::after {
-  opacity: 0.4;
+.game-timing-laser-slot--beam .game-timing-laser-preview--beam:has(.game-timing-laser-preview-img)::after {
+  opacity: 0.38;
+}
+
+.game-timing-laser-slot--beam .game-timing-laser-preview--beam .game-timing-laser-preview-img {
+  position: relative;
+  z-index: 0;
+  width: 100%;
+  flex: 1 1 auto;
+  min-height: 0;
+  max-height: none;
+  max-width: none;
+  object-fit: fill;
+  object-position: center top;
+  border-radius: 2px;
+}
+
+.game-timing-laser-slot--beam .game-timing-laser-preview--beam .game-timing-laser-placeholder {
+  flex: 1 1 auto;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  min-height: 5rem;
+  padding: 0.35rem;
 }
 
 @media (min-width: 700px) {
@@ -1145,6 +1179,70 @@ code {
   color: #c0caf5;
 }
 
+.game-timing-laser-color-label {
+  display: block;
+}
+
+.game-timing-laser-color-wrap {
+  display: flex;
+  align-items: center;
+  gap: 0.55rem;
+  margin-top: 0.28rem;
+}
+
+.game-timing-laser-swatch-stack {
+  position: relative;
+  flex-shrink: 0;
+  width: 2.35rem;
+  height: 2.35rem;
+}
+
+.game-timing-laser-swatch {
+  display: block;
+  width: 100%;
+  height: 100%;
+  border-radius: 8px;
+  border: 1px solid #565f89;
+  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.25);
+  pointer-events: none;
+}
+
+.game-timing-laser-color-picker {
+  position: absolute;
+  inset: 0;
+  width: 100%;
+  height: 100%;
+  margin: 0;
+  padding: 0;
+  border: 0;
+  border-radius: 8px;
+  cursor: pointer;
+  opacity: 0;
+}
+
+.game-timing-laser-color-picker::-webkit-color-swatch-wrapper {
+  padding: 0;
+}
+
+.game-timing-laser-color-picker::-webkit-color-swatch {
+  border: 0;
+  border-radius: 8px;
+}
+
+.game-timing-laser-swatch.is-empty {
+  background-color: transparent !important;
+  background-image:
+    linear-gradient(45deg, #3b4261 25%, transparent 25%, transparent 75%, #3b4261 75%, #3b4261),
+    linear-gradient(45deg, #3b4261 25%, #24283b 25%, #24283b 75%, #3b4261 75%, #3b4261);
+  background-size: 8px 8px;
+  background-position: 0 0, 4px 4px;
+}
+
+.game-timing-laser-color-wrap input[type='text'] {
+  flex: 1;
+  min-width: 0;
+}
+
 /* —— Gauntlet asset library (game timing) —— */
 .gauntlet-asset-library {
   margin: 0.75rem 0 1rem;
diff --git a/www/html/Admin/admin.js b/www/html/Admin/admin.js
index 0c0f66a..9588e35 100644
--- a/www/html/Admin/admin.js
+++ b/www/html/Admin/admin.js
@@ -1982,6 +1982,26 @@
     });
   }
 
+  /** พรีวิวคอลัมน์ beam — สูงแนวตั้ง + สีเติม/กรอบตามช่อง (คล้ายในเกม) */
+  function styleGameTimingLaserBeamPreviewShell() {
+    var prev = el('game-timing-laser-line-preview');
+    if (!prev) return;
+    var fillIn = el('game-timing-laser-fill');
+    var strokeIn = el('game-timing-laser-stroke');
+    var lwIn = el('game-timing-laser-line-width');
+    var fill = fillIn && fillIn.value ? String(fillIn.value).trim() : '';
+    var stroke = strokeIn && strokeIn.value ? String(strokeIn.value).trim() : '';
+    var lw = lwIn ? parseInt(lwIn.value, 10) : 2;
+    if (Number.isNaN(lw)) lw = 2;
+    lw = Math.max(0, Math.min(24, lw));
+    prev.style.backgroundColor = fill || '';
+    if (lw > 0 && stroke) {
+      prev.style.boxShadow = 'inset 0 0 0 ' + Math.min(8, lw) + 'px ' + stroke;
+    } else {
+      prev.style.boxShadow = '';
+    }
+  }
+
   function renderGameTimingLaserVisuals() {
     var slots = [
       { inpId: 'game-timing-laser-top-url', prevId: 'game-timing-laser-top-preview' },
@@ -2009,6 +2029,141 @@
       img.onerror = function () { img.classList.add('is-broken'); };
       prev.appendChild(img);
     });
+    styleGameTimingLaserBeamPreviewShell();
+  }
+
+  function clamp255(x) {
+    return Math.max(0, Math.min(255, Math.round(Number(x))));
+  }
+
+  function parseCssColorToRgba(str) {
+    str = String(str || '').trim();
+    if (!str) return null;
+    var m = str.match(/^rgba?\(\s*([\d.]+)\s*,\s*([\d.]+)\s*,\s*([\d.]+)\s*(?:,\s*([\d.]+)\s*)?\)$/i);
+    if (m) {
+      var r = clamp255(m[1]);
+      var g = clamp255(m[2]);
+      var b = clamp255(m[3]);
+      var a =
+        m[4] !== undefined && m[4] !== '' && !Number.isNaN(Number(m[4]))
+          ? Math.max(0, Math.min(1, Number(m[4])))
+          : 1;
+      return { r: r, g: g, b: b, a: a };
+    }
+    m = str.match(/^#([\da-f]{3}|[\da-f]{6})$/i);
+    if (m) {
+      var h = m[1];
+      var r2;
+      var g2;
+      var b2;
+      if (h.length === 3) {
+        r2 = parseInt(h[0] + h[0], 16);
+        g2 = parseInt(h[1] + h[1], 16);
+        b2 = parseInt(h[2] + h[2], 16);
+      } else {
+        r2 = parseInt(h.slice(0, 2), 16);
+        g2 = parseInt(h.slice(2, 4), 16);
+        b2 = parseInt(h.slice(4, 6), 16);
+      }
+      if (Number.isNaN(r2) || Number.isNaN(g2) || Number.isNaN(b2)) return null;
+      return { r: r2, g: g2, b: b2, a: 1 };
+    }
+    var probe = document.createElement('span');
+    probe.style.cssText = 'position:absolute;visibility:hidden;left:0;top:0;background-color:' + str;
+    document.body.appendChild(probe);
+    var bg = getComputedStyle(probe).backgroundColor;
+    document.body.removeChild(probe);
+    m = bg && bg.match(/^rgba?\(\s*([\d.]+)\s*,\s*([\d.]+)\s*,\s*([\d.]+)\s*(?:,\s*([\d.]+)\s*)?\)$/);
+    if (!m) return null;
+    r2 = clamp255(m[1]);
+    g2 = clamp255(m[2]);
+    b2 = clamp255(m[3]);
+    var a2 = m[4] !== undefined && !Number.isNaN(Number(m[4])) ? Math.max(0, Math.min(1, Number(m[4]))) : 1;
+    return { r: r2, g: g2, b: b2, a: a2 };
+  }
+
+  function rgbToHex6(r, g, b) {
+    function hx(n) {
+      var h = clamp255(n).toString(16);
+      return h.length === 1 ? '0' + h : h;
+    }
+    return '#' + hx(r) + hx(g) + hx(b);
+  }
+
+  function laserHexFromTextOrFallback(text, fallbackHex) {
+    var c = parseCssColorToRgba(text);
+    if (!c) return fallbackHex;
+    return rgbToHex6(c.r, c.g, c.b);
+  }
+
+  function formatLaserRgba(r, g, b, a) {
+    var aa = Math.round(Math.max(0, Math.min(1, a)) * 100) / 100;
+    return 'rgba(' + clamp255(r) + ',' + clamp255(g) + ',' + clamp255(b) + ',' + aa + ')';
+  }
+
+  function syncGameTimingLaserColorSwatches() {
+    function apply(swatchId, textVal) {
+      var sw = el(swatchId);
+      if (!sw) return;
+      var v = textVal != null ? String(textVal).trim() : '';
+      sw.style.backgroundColor = v || '';
+      sw.classList.toggle('is-empty', !v);
+      sw.title = v || 'ว่าง — พิมพ์ค่า CSS หรือกดสี่เหลี่ยมเพื่อเลือกสี';
+    }
+    var fillIn = el('game-timing-laser-fill');
+    var strokeIn = el('game-timing-laser-stroke');
+    apply('game-timing-laser-fill-swatch', fillIn && fillIn.value);
+    apply('game-timing-laser-stroke-swatch', strokeIn && strokeIn.value);
+    var fillPk = el('game-timing-laser-fill-picker');
+    var strokePk = el('game-timing-laser-stroke-picker');
+    if (fillPk && fillIn) {
+      var hf = laserHexFromTextOrFallback(fillIn.value, '#ef4444');
+      if (fillPk.value.toLowerCase() !== hf.toLowerCase()) fillPk.value = hf;
+    }
+    if (strokePk && strokeIn) {
+      var hs = laserHexFromTextOrFallback(strokeIn.value, '#fca5a5');
+      if (strokePk.value.toLowerCase() !== hs.toLowerCase()) strokePk.value = hs;
+    }
+    styleGameTimingLaserBeamPreviewShell();
+  }
+
+  function bindGameTimingLaserColorSwatches() {
+    var fillIn = el('game-timing-laser-fill');
+    var strokeIn = el('game-timing-laser-stroke');
+    if (fillIn) {
+      fillIn.addEventListener('input', syncGameTimingLaserColorSwatches);
+      fillIn.addEventListener('change', syncGameTimingLaserColorSwatches);
+    }
+    if (strokeIn) {
+      strokeIn.addEventListener('input', syncGameTimingLaserColorSwatches);
+      strokeIn.addEventListener('change', syncGameTimingLaserColorSwatches);
+    }
+    function wirePicker(pickerId, textEl, defaultAlpha) {
+      var pk = el(pickerId);
+      var tx = textEl;
+      if (!pk || !tx) return;
+      function applyHex() {
+        var hex = String(pk.value || '').trim();
+        if (!/^#[\da-f]{6}$/i.test(hex)) return;
+        var r = parseInt(hex.slice(1, 3), 16);
+        var g = parseInt(hex.slice(3, 5), 16);
+        var b = parseInt(hex.slice(5, 7), 16);
+        var prev = parseCssColorToRgba(tx.value);
+        var a = prev && typeof prev.a === 'number' ? prev.a : defaultAlpha;
+        tx.value = formatLaserRgba(r, g, b, a);
+        syncGameTimingLaserColorSwatches();
+      }
+      pk.addEventListener('input', applyHex);
+      pk.addEventListener('change', applyHex);
+    }
+    wirePicker('game-timing-laser-fill-picker', fillIn, 0.35);
+    wirePicker('game-timing-laser-stroke-picker', strokeIn, 0.95);
+    var lwIn = el('game-timing-laser-line-width');
+    if (lwIn) {
+      lwIn.addEventListener('input', styleGameTimingLaserBeamPreviewShell);
+      lwIn.addEventListener('change', styleGameTimingLaserBeamPreviewShell);
+    }
+    syncGameTimingLaserColorSwatches();
   }
 
   function bindGameTimingAssignedVisuals() {
@@ -2445,6 +2600,7 @@
         if (el('game-timing-laser-line-width')) el('game-timing-laser-line-width').value = String(Number.isFinite(lw) ? lw : 2);
         renderGameTimingLaneVisuals();
         renderGameTimingLaserVisuals();
+        syncGameTimingLaserColorSwatches();
         applyGameTimingDataToStackInputs(data);
         setMsg('game-timing-msg', '', '');
         return refreshGauntletAssetLibrary();
@@ -2691,6 +2847,7 @@
   }
   bindGauntletAssetLibrary();
   bindGameTimingAssignedVisuals();
+  bindGameTimingLaserColorSwatches();
 
   var btnQuizAdd = el('btn-quiz-admin-add');
   var btnQuizSave = el('btn-quiz-admin-save');
diff --git a/www/html/Admin/index.html b/www/html/Admin/index.html
index e723680..5075d87 100644
--- a/www/html/Admin/index.html
+++ b/www/html/Admin/index.html
@@ -9,7 +9,7 @@
   <link rel="preconnect" href="https://fonts.googleapis.com">
   <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
   <link href="https://fonts.googleapis.com/css2?family=Kanit:wght@400;500;600;700&display=swap" rel="stylesheet">
-  <link rel="stylesheet" href="admin.css?v=18">
+  <link rel="stylesheet" href="admin.css?v=21">
 </head>
 <body>
   <a class="skip-link" href="#admin-main">ข้ามไปเนื้อหา</a>
@@ -513,7 +513,7 @@
                 </div>
                 <div class="game-timing-laser-slot game-timing-laser-slot--beam">
                   <div class="game-timing-laser-slot-label">เส้นกลาง (tile) · Beam</div>
-                  <div id="game-timing-laser-line-preview" class="game-timing-laser-preview" aria-label="ตัวอย่างเส้น laser"></div>
+                  <div id="game-timing-laser-line-preview" class="game-timing-laser-preview game-timing-laser-preview--beam" aria-label="ตัวอย่างเส้น laser"></div>
                   <input type="hidden" id="game-timing-laser-line-url" value="">
                   <div class="game-timing-laser-slot-actions">
                     <button type="button" class="btn btn-ghost btn-sm" id="btn-game-timing-laser-line-view">ดู</button>
@@ -532,8 +532,24 @@
               </div>
             </div>
             <div class="form-grid form-inline quiz-timing-grid game-timing-laser-colors-row gauntlet-editor-laser-colors">
-              <label>สีเติมคอลัมน์ laser (CSS) <input type="text" id="game-timing-laser-fill" maxlength="100" placeholder="rgba(239,68,68,0.35)" spellcheck="false"></label>
-              <label>สีเส้นกรอบ laser <input type="text" id="game-timing-laser-stroke" maxlength="100" placeholder="rgba(252,165,165,0.95)" spellcheck="false"></label>
+              <label class="game-timing-laser-color-label">สีเติมคอลัมน์ laser (CSS)
+                <div class="game-timing-laser-color-wrap">
+                  <div class="game-timing-laser-swatch-stack">
+                    <span id="game-timing-laser-fill-swatch" class="game-timing-laser-swatch" role="img" aria-hidden="true"></span>
+                    <input type="color" id="game-timing-laser-fill-picker" class="game-timing-laser-color-picker" value="#ef4444" title="เลือกสี (RGB) — ค่าโปร่งใสยังแก้ในช่องข้อความ" aria-label="เปิดตัวเลือกสีเติม laser">
+                  </div>
+                  <input type="text" id="game-timing-laser-fill" maxlength="100" placeholder="rgba(239,68,68,0.35)" spellcheck="false">
+                </div>
+              </label>
+              <label class="game-timing-laser-color-label">สีเส้นกรอบ laser
+                <div class="game-timing-laser-color-wrap">
+                  <div class="game-timing-laser-swatch-stack">
+                    <span id="game-timing-laser-stroke-swatch" class="game-timing-laser-swatch" role="img" aria-hidden="true"></span>
+                    <input type="color" id="game-timing-laser-stroke-picker" class="game-timing-laser-color-picker" value="#fca5a5" title="เลือกสี (RGB) — ค่าโปร่งใสยังแก้ในช่องข้อความ" aria-label="เปิดตัวเลือกสีเส้นกรอบ laser">
+                  </div>
+                  <input type="text" id="game-timing-laser-stroke" maxlength="100" placeholder="rgba(252,165,165,0.95)" spellcheck="false">
+                </div>
+              </label>
               <label>ความหนาเส้น (px, 0 = ไม่กรอบ) <input type="number" id="game-timing-laser-line-width" min="0" max="24" step="1" value="2"></label>
             </div>
           </div>
@@ -670,6 +686,6 @@
     </div>
     </main>
   </div>
-  <script src="admin.js?v=51"></script>
+  <script src="admin.js?v=54"></script>
 </body>
 </html>
diff --git a/www/html/Game/data/game-timing.json b/www/html/Game/data/game-timing.json
index d7c79a6..0478628 100644
--- a/www/html/Game/data/game-timing.json
+++ b/www/html/Game/data/game-timing.json
@@ -2,12 +2,17 @@
   "gauntletTickMs": 150,
   "gauntletJumpTicks": 5,
   "gauntletTimeLimitSec": 60,
-  "gauntletLaneImageUrls": [],
+  "gauntletLaneImageUrls": [
+    "/Game/img/gauntlet-assets/gauntlet-6aa244ab734b12e4.png",
+    "/Game/img/gauntlet-assets/gauntlet-c4d4482e2a60eac9.png",
+    "/Game/img/gauntlet-assets/gauntlet-67a585790f67fe67.png",
+    "/Game/img/gauntlet-assets/gauntlet-077c293962b8fe07.png"
+  ],
   "gauntletLaserTopUrl": "",
   "gauntletLaserBottomUrl": "",
-  "gauntletLaserLineUrl": "",
-  "gauntletLaserFillColor": "rgba(140,230,255,0.42)",
-  "gauntletLaserStrokeColor": "rgba(255,220,255,0.9)",
+  "gauntletLaserLineUrl": "/Game/img/gauntlet-assets/gauntlet-2a75a958cd5e5e8a.png",
+  "gauntletLaserFillColor": "rgba(255,204,204,0.1)",
+  "gauntletLaserStrokeColor": "rgba(255,220,255,0)",
   "gauntletLaserLineWidthPx": 2,
   "stackSwingHz": 0.1,
   "stackBlockWidthTiles": 3.2,
diff --git a/www/html/Game/public/editor.html b/www/html/Game/public/editor.html
index a12e4dd..ded2116 100644
--- a/www/html/Game/public/editor.html
+++ b/www/html/Game/public/editor.html
@@ -105,6 +105,8 @@
                 </optgroup>
                 <optgroup label="พรมแดงสุดท้าย">
                   <option value="gauntletPlayerSpawn" id="draw-mode-option-gauntlet-player-spawn" hidden>ลำดับเกิด 1–6 (คลิกซ้ายตามลำดับ)</option>
+                  <option value="gauntletLaserStart" id="draw-mode-option-gauntlet-laser-start" hidden>เลเซอร์: แถวต้น (ขอบบนของแถบ)</option>
+                  <option value="gauntletLaserEnd" id="draw-mode-option-gauntlet-laser-end" hidden>เลเซอร์: แถวปลาย (ขอบล่างของแถบ)</option>
                 </optgroup>
                 <optgroup label="Stack">
                   <option value="stackRelease" id="draw-mode-option-stack-release" hidden>จุดปล่อยตึก (crane / ด้านบน)</option>
@@ -197,6 +199,7 @@
             </div>
             <label class="editor-toggle" title="ปิด = ไม่วาดกริด/ช่องฉาก แต่ยังแสดงรูปที่วาดบนกริด · Off = hide tile grid, grid images still show"><input type="checkbox" id="show-map-in-game" checked> โชว์กริดในเกม</label>
             <button type="button" id="btn-clear-gauntlet-spawns" hidden title="ล้างรายการจุดเกิดพรมแดงที่กำหนดเอง">ล้างลำดับ 1–6</button>
+            <button type="button" id="btn-clear-gauntlet-laser-span" hidden title="ล้างช่วงแนวตั้งของเลเซอร์ — กลับไปเต็มความสูงแมป (ไม่ต้องเปลี่ยนรูปจาก Admin)">ล้างช่วง laser</button>
             <label id="shooter-slot-paint-wrap" class="editor-field-grow" style="display:none;" title="ช่องผู้เล่นลำดับที่ 1–6 ตรงกับคนในเกม (คุณ = ลำดับแรกจาก join)">ช่องเกิดยาน P
               <select id="shooter-slot-paint">
                 <option value="1">1</option>
@@ -286,7 +289,7 @@
     </div>
   </div>
   <script src="js/version.js?v=0.0169"></script>
-  <script src="js/editor.js?v=20260430-editor-footprint-groups"></script>
+  <script src="js/editor.js?v=20260427-gauntlet-laser-span"></script>
   <div class="version-tag">v —</div>
 </body>
 </html>
diff --git a/www/html/Game/public/js/editor.js b/www/html/Game/public/js/editor.js
index bc7df6d..dc0e399 100644
--- a/www/html/Game/public/js/editor.js
+++ b/www/html/Game/public/js/editor.js
@@ -108,6 +108,9 @@
   let jumpSurvivePlatformArea = [];
   let cellColors = [];
   let gauntletPlayerSpawns = [];
+  /** gauntlet: แถว y บน–ล่างของแถบเลเซอร์ (null = เต็มความสูงแมป) */
+  let gauntletLaserRowStart = null;
+  let gauntletLaserRowEnd = null;
   /** ล็อบบี้ / ZEP / quiz_carry / ฯลฯ — P1..P6 ตามลำดับ join เมื่อเลือกโหมด slots6 */
   let lobbyPlayerSpawns = [null, null, null, null, null, null];
   /** space_shooter: กริด 0 หรือ 1–6 = ลำดับผู้เล่น P1–P6 */
@@ -424,6 +427,19 @@
       .slice(0, 6);
   }
 
+  function sanitizeGauntletLaserRowsInEditor() {
+    if (gauntletLaserRowStart == null || gauntletLaserRowEnd == null) return;
+    let y0 = Math.floor(Number(gauntletLaserRowStart));
+    let y1 = Math.floor(Number(gauntletLaserRowEnd));
+    if (!Number.isFinite(y0)) y0 = 0;
+    if (!Number.isFinite(y1)) y1 = height - 1;
+    y0 = Math.max(0, Math.min(height - 1, y0));
+    y1 = Math.max(0, Math.min(height - 1, y1));
+    if (y1 < y0) { const t = y0; y0 = y1; y1 = t; }
+    gauntletLaserRowStart = y0;
+    gauntletLaserRowEnd = y1;
+  }
+
   function supportsLobbySpawnPaint(gt) {
     return gt === 'zep' || gt === 'lobby' || gt === 'quiz' || gt === 'quiz_carry' || gt === 'stack' || gt === 'jump_survive' || gt === 'quiz_battle';
   }
@@ -895,6 +911,7 @@
       if (hint) {
         hint.innerHTML = '<p class="editor-hint-lead">โหมด <strong>พรมแดงสุดท้าย</strong></p>' + editorHintBulletList([
           'อุปสรรคเลนเฉพาะ<strong>แถวที่มีคน</strong> + เลเซอร์ทุกแถว · ชนแล้วถอยซ้าย',
+          'โหมดวาด <strong>เลเซอร์: แถวต้น / แถวปลาย</strong> — กำหนดความสูงแถบเลเซอร์บนแมป (ไม่ต้องเปลี่ยนรูปจาก Admin)',
           'ลำดับเกิด <strong>1–6</strong> หรือช่องฟ้า',
           'กระโดด: <kbd>Space</kbd> · <kbd>W</kbd> · <kbd>↑</kbd>',
         ]);
@@ -1032,6 +1049,18 @@
       if (!showG && drawModeEl && drawModeEl.value === 'gauntletPlayerSpawn') drawModeEl.value = 'wall';
     }
     if (btnClrG) btnClrG.hidden = gt !== 'gauntlet';
+    const glStartOpt = document.getElementById('draw-mode-option-gauntlet-laser-start');
+    const glEndOpt = document.getElementById('draw-mode-option-gauntlet-laser-end');
+    const btnClrGl = document.getElementById('btn-clear-gauntlet-laser-span');
+    if (glStartOpt) {
+      glStartOpt.hidden = gt !== 'gauntlet';
+      if (gt !== 'gauntlet' && drawModeEl && drawModeEl.value === 'gauntletLaserStart') drawModeEl.value = 'wall';
+    }
+    if (glEndOpt) {
+      glEndOpt.hidden = gt !== 'gauntlet';
+      if (gt !== 'gauntlet' && drawModeEl && drawModeEl.value === 'gauntletLaserEnd') drawModeEl.value = 'wall';
+    }
+    if (btnClrGl) btnClrGl.hidden = gt !== 'gauntlet';
     const shOpt = document.getElementById('draw-mode-option-shooter-spawn');
     const shWrap = document.getElementById('shooter-slot-paint-wrap');
     const btnClrSh = document.getElementById('btn-clear-shooter-spawns');
@@ -1127,6 +1156,8 @@
     if (gameType === 'gauntlet' || gameType === 'stack' || gameType === 'quiz_carry' || gameType === 'quiz_battle' || gameType === 'jump_survive' || gameType === 'space_shooter' || gameType === 'balloon_boss') lanes = [];
     jumpSurvivePlatforms = [];
     gauntletPlayerSpawns = [];
+    gauntletLaserRowStart = null;
+    gauntletLaserRowEnd = null;
     lobbyPlayerSpawns = [null, null, null, null, null, null];
     const lsmInit = document.getElementById('lobby-spawn-mode');
     if (lsmInit) lsmInit.value = 'random';
@@ -1537,6 +1568,30 @@
         ctx.fillText(String(num), cx, cy + 2);
         ctx.textAlign = 'left';
       };
+      if (gauntletLaserRowStart != null && gauntletLaserRowEnd != null) {
+        let y0 = Math.max(0, Math.min(height - 1, gauntletLaserRowStart));
+        let y1 = Math.max(0, Math.min(height - 1, gauntletLaserRowEnd));
+        if (y1 < y0) { const t = y0; y0 = y1; y1 = t; }
+        const x0 = 2;
+        const x1 = width * tileSize - 2;
+        ctx.save();
+        ctx.fillStyle = 'rgba(255, 80, 140, 0.12)';
+        ctx.fillRect(x0, y0 * tileSize, x1 - x0, (y1 - y0 + 1) * tileSize);
+        ctx.strokeStyle = 'rgba(255, 140, 180, 0.9)';
+        ctx.lineWidth = 2;
+        ctx.setLineDash([7, 5]);
+        ctx.beginPath();
+        ctx.moveTo(x0, y0 * tileSize + 1);
+        ctx.lineTo(x1, y0 * tileSize + 1);
+        ctx.moveTo(x0, (y1 + 1) * tileSize - 1);
+        ctx.lineTo(x1, (y1 + 1) * tileSize - 1);
+        ctx.stroke();
+        ctx.setLineDash([]);
+        ctx.fillStyle = 'rgba(255, 200, 220, 0.95)';
+        ctx.font = 'bold 11px ui-monospace, Consolas, sans-serif';
+        ctx.fillText('laser y=' + y0 + '…' + y1, x0 + 4, y0 * tileSize + 14);
+        ctx.restore();
+      }
       if (gauntletPlayerSpawns.length) {
         for (let i = 0; i < gauntletPlayerSpawns.length; i++) {
           const s = gauntletPlayerSpawns[i];
@@ -1650,6 +1705,30 @@
   }
 
   function setCell(x, y, left, mouseEv) {
+    if (drawModeEl.value === 'gauntletLaserStart' || drawModeEl.value === 'gauntletLaserEnd') {
+      const gt = gameTypeEl ? gameTypeEl.value : gameType;
+      if (gt !== 'gauntlet') return;
+      if (!left) {
+        gauntletLaserRowStart = null;
+        gauntletLaserRowEnd = null;
+        if (statusEl) statusEl.textContent = 'ล้างช่วงแนวตั้ง laser แล้ว — ใช้เต็มความสูงแมป';
+        draw();
+        return;
+      }
+      const yy = Math.max(0, Math.min(height - 1, y));
+      if (drawModeEl.value === 'gauntletLaserStart') gauntletLaserRowStart = yy;
+      else gauntletLaserRowEnd = yy;
+      sanitizeGauntletLaserRowsInEditor();
+      if (statusEl) {
+        const a = gauntletLaserRowStart;
+        const b = gauntletLaserRowEnd;
+        statusEl.textContent = (a != null && b != null)
+          ? ('เลเซอร์: แถว ' + a + '–' + b + ' (แนวตั้ง · คลิกขวา = ล้างทั้งช่วง)')
+          : ('เลเซอร์: ตั้งแถว ' + yy + ' แล้ว — เลือกโหมดอีกแถวเพื่อกำหนดขอบอีกด้าน');
+      }
+      draw();
+      return;
+    }
     if (drawModeEl.value === 'gauntletPlayerSpawn') {
       const gt = gameTypeEl ? gameTypeEl.value : gameType;
       if (gt !== 'gauntlet') return;
@@ -1993,6 +2072,8 @@
     if (drawModeEl && quizCarryEditorCarryModes().indexOf(drawModeEl.value) >= 0 && gameType !== 'quiz_carry') drawModeEl.value = 'wall';
     if (drawModeEl && drawModeEl.value === 'jumpSurvivePlatform' && gameType !== 'jump_survive') drawModeEl.value = 'wall';
     if (drawModeEl && drawModeEl.value === 'gauntletPlayerSpawn' && gameType !== 'gauntlet') drawModeEl.value = 'wall';
+    if (drawModeEl && drawModeEl.value === 'gauntletLaserStart' && gameType !== 'gauntlet') drawModeEl.value = 'wall';
+    if (drawModeEl && drawModeEl.value === 'gauntletLaserEnd' && gameType !== 'gauntlet') drawModeEl.value = 'wall';
     if (drawModeEl && drawModeEl.value === 'shooterSpawnPaint' && gameType !== 'space_shooter') drawModeEl.value = 'wall';
     if (drawModeEl && drawModeEl.value === 'balloonBossPlayerPaint' && gameType !== 'balloon_boss') drawModeEl.value = 'wall';
     if (drawModeEl && drawModeEl.value === 'balloonBossBossPaint' && gameType !== 'balloon_boss') drawModeEl.value = 'wall';
@@ -2011,6 +2092,15 @@
       draw();
     });
   }
+  const btnClearGauntletLaserSpan = document.getElementById('btn-clear-gauntlet-laser-span');
+  if (btnClearGauntletLaserSpan) {
+    btnClearGauntletLaserSpan.addEventListener('click', () => {
+      gauntletLaserRowStart = null;
+      gauntletLaserRowEnd = null;
+      if (statusEl) statusEl.textContent = 'ล้างช่วง laser — เลเซอร์ในเกมใช้เต็มความสูงแมปอีกครั้ง';
+      draw();
+    });
+  }
 
   const lobbySpawnModeEl = document.getElementById('lobby-spawn-mode');
   if (lobbySpawnModeEl) {
@@ -2190,6 +2280,16 @@
     body.gauntletPlayerSpawns = gameType === 'gauntlet'
       ? gauntletPlayerSpawns.map((s) => ({ x: s.x, y: s.y }))
       : [];
+    if (gameType === 'gauntlet') {
+      sanitizeGauntletLaserRowsInEditor();
+      if (gauntletLaserRowStart != null && gauntletLaserRowEnd != null) {
+        body.gauntletLaserRowStart = gauntletLaserRowStart;
+        body.gauntletLaserRowEnd = gauntletLaserRowEnd;
+      } else {
+        body.gauntletLaserRowStart = null;
+        body.gauntletLaserRowEnd = null;
+      }
+    }
     const url = mapId ? BASE + '/api/maps/' + mapId : BASE + '/api/maps';
     const method = mapId ? 'PUT' : 'POST';
     fetch(url, { method, headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(body) })
@@ -2461,6 +2561,16 @@
           ? m.gauntletPlayerSpawns.map((s) => ({ x: Math.floor(Number(s.x)), y: Math.floor(Number(s.y)) }))
             .filter((s) => Number.isFinite(s.x) && Number.isFinite(s.y))
           : [];
+        const rs = m.gauntletLaserRowStart;
+        const re = m.gauntletLaserRowEnd;
+        if (rs != null && re != null && Number.isFinite(Number(rs)) && Number.isFinite(Number(re))) {
+          gauntletLaserRowStart = Math.floor(Number(rs));
+          gauntletLaserRowEnd = Math.floor(Number(re));
+          sanitizeGauntletLaserRowsInEditor();
+        } else {
+          gauntletLaserRowStart = null;
+          gauntletLaserRowEnd = null;
+        }
         lobbyPlayerSpawns = [null, null, null, null, null, null];
         if (Array.isArray(m.lobbyPlayerSpawns)) {
           for (let li = 0; li < 6 && li < m.lobbyPlayerSpawns.length; li++) {
diff --git a/www/html/Game/public/js/play.js b/www/html/Game/public/js/play.js
index 7f14c76..df41f23 100644
--- a/www/html/Game/public/js/play.js
+++ b/www/html/Game/public/js/play.js
@@ -4956,7 +4956,34 @@
 
   function cloneGauntletObsSnap(arr) {
     if (!Array.isArray(arr)) return [];
-    return arr.map((o) => (o && o.id != null ? { id: o.id, kind: o.kind, x: o.x, y: o.y } : null)).filter(Boolean);
+    return arr.map((o) => {
+      if (!o || o.id == null) return null;
+      const row = { id: o.id, kind: o.kind, x: o.x, y: o.y };
+      if (o.kind === 'laser') {
+        if (o.y0 != null) row.y0 = o.y0;
+        if (o.y1 != null) row.y1 = o.y1;
+      }
+      return row;
+    }).filter(Boolean);
+  }
+
+  function gauntletLaserRowHitRange(ob, mapH) {
+    const h = Math.max(1, Math.floor(Number(mapH)) || 15);
+    let y0 = ob && ob.y0 != null && Number.isFinite(Number(ob.y0)) ? Math.floor(Number(ob.y0)) : 0;
+    let y1 = ob && ob.y1 != null && Number.isFinite(Number(ob.y1)) ? Math.floor(Number(ob.y1)) : h - 1;
+    y0 = Math.max(0, Math.min(h - 1, y0));
+    y1 = Math.max(0, Math.min(h - 1, y1));
+    if (y1 < y0) {
+      const t = y0;
+      y0 = y1;
+      y1 = t;
+    }
+    return { y0, y1 };
+  }
+
+  function gauntletLaserOverlapsPlayerRow(ob, py, mapH) {
+    const { y0, y1 } = gauntletLaserRowHitRange(ob, mapH);
+    return py >= y0 && py <= y1;
   }
 
   /** โค้งยกตัว: ขึ้นถึงจุดสูงสุดเร็ว ลงชัน (รู้สึกลงพื้นเร็วกว่าแบบสมมาตร) */
@@ -4985,7 +5012,12 @@
       const p = prevMap.get(n.id);
       let drawX = n.x;
       if (p && Number.isFinite(p.x) && Number.isFinite(n.x)) drawX = p.x + (n.x - p.x) * alpha;
-      out.push({ id: n.id, kind: n.kind, drawX, y: n.y });
+      const row = { id: n.id, kind: n.kind, drawX, y: n.y };
+      if (n.kind === 'laser') {
+        if (n.y0 != null) row.y0 = n.y0;
+        if (n.y1 != null) row.y1 = n.y1;
+      }
+      out.push(row);
     }
     return out;
   }
@@ -4999,12 +5031,19 @@
     } else {
       const curDraw = getGauntletObsDrawPositionsAt(now);
       const curMap = new Map(curDraw.map((o) => [o.id, o.drawX]));
-      gauntletObsRenderPrev = next.map((n) => ({
-        id: n.id,
-        kind: n.kind,
-        x: curMap.has(n.id) ? curMap.get(n.id) : n.x,
-        y: n.y,
-      }));
+      gauntletObsRenderPrev = next.map((n) => {
+        const row = {
+          id: n.id,
+          kind: n.kind,
+          x: curMap.has(n.id) ? curMap.get(n.id) : n.x,
+          y: n.y,
+        };
+        if (n.kind === 'laser') {
+          if (n.y0 != null) row.y0 = n.y0;
+          if (n.y1 != null) row.y1 = n.y1;
+        }
+        return row;
+      });
       gauntletObsRenderNext = next;
     }
     gauntletObsBlendT0 = now;
@@ -5044,8 +5083,8 @@
         if (obs.x === px + 1 && obs.y === py) incomingCol = true;
       }
       if (obs.kind === 'laser' && typeof obs.x === 'number') {
-        if (obs.x === px) sameCell = true;
-        if (obs.x === px + 1) incomingCol = true;
+        if (obs.x === px && gauntletLaserOverlapsPlayerRow(obs, py, h)) sameCell = true;
+        if (obs.x === px + 1 && gauntletLaserOverlapsPlayerRow(obs, py, h)) incomingCol = true;
       }
     }
     const tier = o.botTier || 'avg';
@@ -5076,8 +5115,13 @@
         else hitBack = true;
       }
       if (ob.kind === 'laser' && typeof ob.x === 'number' && ob.x === px) {
-        if (air) advanceX = true;
-        else hitBack = true;
+        if (!gauntletLaserOverlapsPlayerRow(ob, py, h)) {
+          /* เลเซอร์ไม่ครอบแถวนี้ */
+        } else if (air) {
+          advanceX = true;
+        } else {
+          hitBack = true;
+        }
       }
     }
     if (advanceX) {
@@ -9695,10 +9739,11 @@
           }
         } else if (o.kind === 'laser' && typeof o.drawX === 'number') {
           if (o.drawX < stx - 2 || o.drawX > enx + 2) continue;
+          const { y0: laserRow0, y1: laserRow1 } = gauntletLaserRowHitRange(o, h);
           const wx0 = o.drawX * tileSize;
           const wx1 = (o.drawX + 1) * tileSize;
-          const wy0 = 0;
-          const wy1 = h * tileSize;
+          const wy0 = laserRow0 * tileSize;
+          const wy1 = (laserRow1 + 1) * tileSize;
           const [sx0, syTop] = worldToScreen(wx0, wy0);
           const [sx1, syBot] = worldToScreen(wx1, wy1);
           const rx = Math.min(sx0, sx1);
diff --git a/www/html/Game/public/play.html b/www/html/Game/public/play.html
index 3d22225..54adf90 100644
--- a/www/html/Game/public/play.html
+++ b/www/html/Game/public/play.html
@@ -1462,7 +1462,7 @@
   </div>
   <script src="/Game/socket.io/socket.io.js"></script>
   <script src="js/version.js?v=0.0166"></script>
-  <script src="js/play.js?v=0.184"></script>
+  <script src="js/play.js?v=0.185"></script>
   <div class="version-tag">v —</div>
 </body>
 </html>
diff --git a/www/html/Game/public/play.js b/www/html/Game/public/play.js
index 7f14c76..df41f23 100644
--- a/www/html/Game/public/play.js
+++ b/www/html/Game/public/play.js
@@ -4956,7 +4956,34 @@
 
   function cloneGauntletObsSnap(arr) {
     if (!Array.isArray(arr)) return [];
-    return arr.map((o) => (o && o.id != null ? { id: o.id, kind: o.kind, x: o.x, y: o.y } : null)).filter(Boolean);
+    return arr.map((o) => {
+      if (!o || o.id == null) return null;
+      const row = { id: o.id, kind: o.kind, x: o.x, y: o.y };
+      if (o.kind === 'laser') {
+        if (o.y0 != null) row.y0 = o.y0;
+        if (o.y1 != null) row.y1 = o.y1;
+      }
+      return row;
+    }).filter(Boolean);
+  }
+
+  function gauntletLaserRowHitRange(ob, mapH) {
+    const h = Math.max(1, Math.floor(Number(mapH)) || 15);
+    let y0 = ob && ob.y0 != null && Number.isFinite(Number(ob.y0)) ? Math.floor(Number(ob.y0)) : 0;
+    let y1 = ob && ob.y1 != null && Number.isFinite(Number(ob.y1)) ? Math.floor(Number(ob.y1)) : h - 1;
+    y0 = Math.max(0, Math.min(h - 1, y0));
+    y1 = Math.max(0, Math.min(h - 1, y1));
+    if (y1 < y0) {
+      const t = y0;
+      y0 = y1;
+      y1 = t;
+    }
+    return { y0, y1 };
+  }
+
+  function gauntletLaserOverlapsPlayerRow(ob, py, mapH) {
+    const { y0, y1 } = gauntletLaserRowHitRange(ob, mapH);
+    return py >= y0 && py <= y1;
   }
 
   /** โค้งยกตัว: ขึ้นถึงจุดสูงสุดเร็ว ลงชัน (รู้สึกลงพื้นเร็วกว่าแบบสมมาตร) */
@@ -4985,7 +5012,12 @@
       const p = prevMap.get(n.id);
       let drawX = n.x;
       if (p && Number.isFinite(p.x) && Number.isFinite(n.x)) drawX = p.x + (n.x - p.x) * alpha;
-      out.push({ id: n.id, kind: n.kind, drawX, y: n.y });
+      const row = { id: n.id, kind: n.kind, drawX, y: n.y };
+      if (n.kind === 'laser') {
+        if (n.y0 != null) row.y0 = n.y0;
+        if (n.y1 != null) row.y1 = n.y1;
+      }
+      out.push(row);
     }
     return out;
   }
@@ -4999,12 +5031,19 @@
     } else {
       const curDraw = getGauntletObsDrawPositionsAt(now);
       const curMap = new Map(curDraw.map((o) => [o.id, o.drawX]));
-      gauntletObsRenderPrev = next.map((n) => ({
-        id: n.id,
-        kind: n.kind,
-        x: curMap.has(n.id) ? curMap.get(n.id) : n.x,
-        y: n.y,
-      }));
+      gauntletObsRenderPrev = next.map((n) => {
+        const row = {
+          id: n.id,
+          kind: n.kind,
+          x: curMap.has(n.id) ? curMap.get(n.id) : n.x,
+          y: n.y,
+        };
+        if (n.kind === 'laser') {
+          if (n.y0 != null) row.y0 = n.y0;
+          if (n.y1 != null) row.y1 = n.y1;
+        }
+        return row;
+      });
       gauntletObsRenderNext = next;
     }
     gauntletObsBlendT0 = now;
@@ -5044,8 +5083,8 @@
         if (obs.x === px + 1 && obs.y === py) incomingCol = true;
       }
       if (obs.kind === 'laser' && typeof obs.x === 'number') {
-        if (obs.x === px) sameCell = true;
-        if (obs.x === px + 1) incomingCol = true;
+        if (obs.x === px && gauntletLaserOverlapsPlayerRow(obs, py, h)) sameCell = true;
+        if (obs.x === px + 1 && gauntletLaserOverlapsPlayerRow(obs, py, h)) incomingCol = true;
       }
     }
     const tier = o.botTier || 'avg';
@@ -5076,8 +5115,13 @@
         else hitBack = true;
       }
       if (ob.kind === 'laser' && typeof ob.x === 'number' && ob.x === px) {
-        if (air) advanceX = true;
-        else hitBack = true;
+        if (!gauntletLaserOverlapsPlayerRow(ob, py, h)) {
+          /* เลเซอร์ไม่ครอบแถวนี้ */
+        } else if (air) {
+          advanceX = true;
+        } else {
+          hitBack = true;
+        }
       }
     }
     if (advanceX) {
@@ -9695,10 +9739,11 @@
           }
         } else if (o.kind === 'laser' && typeof o.drawX === 'number') {
           if (o.drawX < stx - 2 || o.drawX > enx + 2) continue;
+          const { y0: laserRow0, y1: laserRow1 } = gauntletLaserRowHitRange(o, h);
           const wx0 = o.drawX * tileSize;
           const wx1 = (o.drawX + 1) * tileSize;
-          const wy0 = 0;
-          const wy1 = h * tileSize;
+          const wy0 = laserRow0 * tileSize;
+          const wy1 = (laserRow1 + 1) * tileSize;
           const [sx0, syTop] = worldToScreen(wx0, wy0);
           const [sx1, syBot] = worldToScreen(wx1, wy1);
           const rx = Math.min(sx0, sx1);
diff --git a/www/html/Game/server.js b/www/html/Game/server.js
index 2bfca2e..ec6cfb2 100644
--- a/www/html/Game/server.js
+++ b/www/html/Game/server.js
@@ -2634,6 +2634,27 @@ function endGauntletGame(sid, space, reason) {
   });
 }
 
+/** แถว y บน–ล่างของเลเซอร์จากแมป (null ทั้งคู่ = เต็มความสูง) */
+function gauntletLaserVerticalSpanFromMap(md) {
+  const hRaw = md && md.height != null ? Number(md.height) : 15;
+  const h = Math.max(1, Math.floor(Number.isFinite(hRaw) ? hRaw : 15));
+  const rs = md && md.gauntletLaserRowStart;
+  const re = md && md.gauntletLaserRowEnd;
+  if (rs == null || re == null || !Number.isFinite(Number(rs)) || !Number.isFinite(Number(re))) {
+    return { y0: 0, y1: h - 1 };
+  }
+  let y0 = Math.floor(Number(rs));
+  let y1 = Math.floor(Number(re));
+  y0 = Math.max(0, Math.min(h - 1, y0));
+  y1 = Math.max(0, Math.min(h - 1, y1));
+  if (y1 < y0) {
+    const t = y0;
+    y0 = y1;
+    y1 = t;
+  }
+  return { y0, y1 };
+}
+
 function runGauntletTick(sid, space) {
   const md = (space.mapId && maps.get(space.mapId)) || space.mapData;
   if (!md || md.gameType !== 'gauntlet') {
@@ -2687,7 +2708,8 @@ function runGauntletTick(sid, space) {
     gr.nextSpawnIn = 2 + Math.floor(Math.random() * 6);
     /* ประเภท 2: เลเซอร์ — ทุกแถว */
     if (Math.random() < GAUNTLET_LASER_SPAWN_CHANCE) {
-      gr.obstacles.push({ id: ++gr.nextObsId, kind: 'laser', x: w - 1 });
+      const span = gauntletLaserVerticalSpanFromMap(md);
+      gr.obstacles.push({ id: ++gr.nextObsId, kind: 'laser', x: w - 1, y0: span.y0, y1: span.y1 });
     }
     /* ประเภท 1: แยกเลน — เฉพาะแถวที่มีผู้เล่นยืนอยู่ (สุ่มแยกแถว) */
     occupiedY.forEach((ly) => {
@@ -2712,8 +2734,17 @@ function runGauntletTick(sid, space) {
         else hitBack = true;
       }
       if (o.kind === 'laser' && o.x === px) {
-        if (air) advanceX = true;
-        else hitBack = true;
+        const y0 = o.y0 != null && Number.isFinite(Number(o.y0)) ? Math.max(0, Math.min(h - 1, Math.floor(Number(o.y0)))) : 0;
+        const y1 = o.y1 != null && Number.isFinite(Number(o.y1)) ? Math.max(0, Math.min(h - 1, Math.floor(Number(o.y1)))) : h - 1;
+        const lo = Math.min(y0, y1);
+        const hi = Math.max(y0, y1);
+        if (py < lo || py > hi) {
+          /* เลเซอร์ไม่ครอบแถวนี้ */
+        } else if (air) {
+          advanceX = true;
+        } else {
+          hitBack = true;
+        }
       }
     }
     if (advanceX) {
@@ -2728,7 +2759,14 @@ function runGauntletTick(sid, space) {
     p.y = py;
   });
 
-  const obsOut = gr.obstacles.map((o) => ({ id: o.id, kind: o.kind, x: o.x, y: o.kind === 'laser' ? null : o.y }));
+  const obsOut = gr.obstacles.map((o) => {
+    if (o.kind === 'laser') {
+      const y0 = o.y0 != null && Number.isFinite(Number(o.y0)) ? Math.floor(Number(o.y0)) : 0;
+      const y1 = o.y1 != null && Number.isFinite(Number(o.y1)) ? Math.floor(Number(o.y1)) : h - 1;
+      return { id: o.id, kind: 'laser', x: o.x, y: null, y0, y1 };
+    }
+    return { id: o.id, kind: o.kind, x: o.x, y: o.y };
+  });
   const playersOut = [...space.peers.values()].map((p) => ({
     id: p.id,
     x: p.x,