diff --git a/apps/ai-game-creator-shell/src/styles.css b/apps/ai-game-creator-shell/src/styles.css
index 28fa6e4c1..e44895373 100644
--- a/apps/ai-game-creator-shell/src/styles.css
+++ b/apps/ai-game-creator-shell/src/styles.css
@@ -5087,6 +5087,7 @@ iframe.preview-frame {
   background-color: #fffdfa;
   background-image: radial-gradient(#eaded8 0.8px, transparent 0.8px);
   background-size: 18px 18px;
+  user-select: none;
 }
 
 .game-resource-canvas--dependency {
diff --git a/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts b/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts
index 4eb8f6f63..28de13cd5 100644
--- a/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts
+++ b/apps/ai-game-creator-shell/tests/appSurface/project-development.suite.ts
@@ -1844,6 +1844,9 @@ export function registerProjectWorkbenchFoundationTests() {
     expect(styles).toMatch(
       /\.game-resource-card-open\s*\{[^}]*cursor:\s*pointer[^}]*touch-action:\s*manipulation/s,
     );
+    expect(styles).toMatch(
+      /\.game-resource-canvas\s*\{[^}]*user-select:\s*none/s,
+    );
     expect(styles).not.toMatch(/\.game-resource-card\.is-dragging/);
 
     fireEvent.click(artReceiptButton);