diff --git a/src/systems/CameraSystem.ts b/src/systems/CameraSystem.ts
index 2b765c9..3c079f8 100644
--- a/src/systems/CameraSystem.ts
+++ b/src/systems/CameraSystem.ts
@@ -52,22 +52,16 @@ export class CameraSystem {
       d:     kb.addKey(Phaser.Input.Keyboard.KeyCodes.D),
     }
 
-    // Scroll wheel zoom — zoom toward mouse pointer position
+    // Scroll wheel zoom — centers the world point under the mouse, then zooms
     this.scene.input.on('wheel', (ptr: Phaser.Input.Pointer, _objs: unknown, _dx: number, dy: number) => {
       const newZoom = Phaser.Math.Clamp(cam.zoom - Math.sign(dy) * ZOOM_STEP, MIN_ZOOM, MAX_ZOOM)
       if (newZoom === cam.zoom) return
 
-      // Sample the world point under the mouse BEFORE the zoom change
-      const before = cam.getWorldPoint(ptr.x, ptr.y)
-
+      // Move the world point under the mouse to the viewport center, then zoom toward it
+      const wp = cam.getWorldPoint(ptr.x, ptr.y)
+      cam.scrollX = wp.x - cam.width  / (2 * newZoom)
+      cam.scrollY = wp.y - cam.height / (2 * newZoom)
       cam.setZoom(newZoom)
-
-      // Sample the same screen position AFTER zoom — it now maps to a different world point
-      const after = cam.getWorldPoint(ptr.x, ptr.y)
-
-      // Shift scroll by the difference so the original world point snaps back under the mouse
-      cam.scrollX -= after.x - before.x
-      cam.scrollY -= after.y - before.y
     })
 
     // Middle-click pan: start on button down