diff --git a/app/javascript/controllers/games/current/board/desktop_controller.js b/app/javascript/controllers/games/current/board/desktop_controller.js
index 3c5a4c17..fc467d77 100644
--- a/app/javascript/controllers/games/current/board/desktop_controller.js
+++ b/app/javascript/controllers/games/current/board/desktop_controller.js
@@ -20,12 +20,18 @@ export default class extends Controller {
     revealNeighborsUrl: String,
   }
 
-  static cellIdRegex = /cells\/(\d+)\//
+  static highlightNeighborsDelay = 100 // ms
 
   dispatchMousedown(event) {
     if (!mouse(event).actsAsLeftClick()) return
 
-    cell(event.target).highlightNeighbors(this.highlightNeighborsUrlValue)
+    this.highlightNeighborsTimer = setTimeout(() => {
+      cell(event.target).highlightNeighbors(this.highlightNeighborsUrlValue)
+    }, this.constructor.highlightNeighborsDelay)
+  }
+
+  dispatchMouseup() {
+    clearTimeout(this.highlightNeighborsTimer)
   }
 
   dispatchContextmenu(event) {
diff --git a/app/views/games/current/board/_content.html.erb b/app/views/games/current/board/_content.html.erb
index bf0950b6..bc68bd10 100644
--- a/app/views/games/current/board/_content.html.erb
+++ b/app/views/games/current/board/_content.html.erb
@@ -31,6 +31,7 @@
         data-<%= controller %>-reveal-neighbors-url-value="<%= content.reveal_neighbors_url %>"
         data-action="
           mousedown-><%= controller %>#dispatchMousedown
+          mouseup-><%= controller %>#dispatchMouseup
           contextmenu-><%= controller %>#dispatchContextmenu:prevent
           click-><%= controller %>#dispatchClick
         "