diff --git a/packages/sample-game/package.json b/packages/sample-game/package.json
index 8ec6f16..0ed7bf0 100644
--- a/packages/sample-game/package.json
+++ b/packages/sample-game/package.json
@@ -17,6 +17,7 @@
   },
   "devDependencies": {
     "@preact/preset-vite": "^2.8.1",
+    "@preact/signals": "^2.9.0",
     "@tailwindcss/vite": "^4.0.0",
     "tailwindcss": "^4.0.0",
     "typescript": "^5.3.3",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 4796aa9..a10864c 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -66,6 +66,9 @@ importers:
       '@preact/preset-vite':
         specifier: ^2.8.1
         version: 2.10.5(@babel/core@7.29.0)(preact@10.29.0)(rollup@4.60.1)(vite@5.4.21(lightningcss@1.32.0))
+      '@preact/signals':
+        specifier: ^2.9.0
+        version: 2.9.0(preact@10.29.0)
       '@tailwindcss/vite':
         specifier: ^4.0.0
         version: 4.2.2(vite@5.4.21(lightningcss@1.32.0))
@@ -493,6 +496,11 @@ packages:
   '@preact/signals-core@1.14.1':
     resolution: {integrity: sha512-vxPpfXqrwUe9lpjqfYNjAF/0RF/eFGeLgdJzdmIIZjpOnTmGmAB4BjWone562mJGMRP4frU6iZ6ei3PDsu52Ng==}
 
+  '@preact/signals@2.9.0':
+    resolution: {integrity: sha512-hYrY0KyUqkDgOl1qba/JGn6y81pXnurn21PMaxfcMwdncdZ3M/oVdmpTvEnsGjh48dIwDVc7bjWHqIsngSjYug==}
+    peerDependencies:
+      preact: '>= 10.25.0 || >=11.0.0-0'
+
   '@prefresh/babel-plugin@0.5.3':
     resolution: {integrity: sha512-57LX2SHs4BX2s1IwCjNzTE2OJeEepRCNf1VTEpbNcUyHfMO68eeOWGDIt4ob9aYlW6PEWZ1SuwNikuoIXANDtQ==}
 
@@ -1696,6 +1704,11 @@ snapshots:
 
   '@preact/signals-core@1.14.1': {}
 
+  '@preact/signals@2.9.0(preact@10.29.0)':
+    dependencies:
+      '@preact/signals-core': 1.14.1
+      preact: 10.29.0
+
   '@prefresh/babel-plugin@0.5.3': {}
 
   '@prefresh/core@1.5.9(preact@10.29.0)':