diff --git a/build/html.ts b/build/html.ts
index 4310e75..6194399 100644
--- a/build/html.ts
+++ b/build/html.ts
@@ -35,7 +35,7 @@ export async function buildHTML(game: string, production = false, portable = fal
             console.log(bundle.outputs);
             return;
         }
-        const iconFile = Bun.file(path.resolve(import.meta.dir, '..', 'games', game, 'assets', 'favicon.ico'));
+        const iconFile = Bun.file(path.resolve(import.meta.dir, '..', 'src', 'games', game, 'assets', 'favicon.ico'));
         let icon = '';
         if (await iconFile.exists()) {
             icon = `<link rel="icon" href="data:;base64,${Buffer.from(await iconFile.arrayBuffer()).toString('base64')}" />`;
@@ -52,6 +52,7 @@ export async function buildHTML(game: string, production = false, portable = fal
         }
 
         script = script.replaceAll('await Promise.resolve().then(() =>', '(');
+        let scriptPrefix = '';
         if (production) {
             const minifyResult = UglifyJS.minify(script, {
                 module: true,
@@ -61,10 +62,13 @@ export async function buildHTML(game: string, production = false, portable = fal
             } else {
                 script = minifyResult.code;
             }
+        } else {
+            const eruda = await Bun.file(path.resolve(import.meta.dir, '..', 'node_modules', 'eruda', 'eruda.js')).text();
+            scriptPrefix = `<script>${eruda};\neruda.init();</script>`;
         }
 
         const resultHTML = html
-            .replace('$SCRIPT$', `<script type="module">${script}</script>`)
+            .replace('$SCRIPT$', () => `${scriptPrefix}<script type="module">${script}</script>`)
             .replace('$TITLE$', game[0].toUpperCase() + game.slice(1).toLowerCase())
             .replace('$ICON$', icon);
 
diff --git a/bun.lockb b/bun.lockb
index 1b68a43..45cc0df 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/package.json b/package.json
index 4843cd9..8d567e5 100644
--- a/package.json
+++ b/package.json
@@ -18,6 +18,7 @@
     "@types/inquirer": "9.0.7",
     "assemblyscript": "0.27.29",
     "bun-lightningcss": "0.2.0",
+    "eruda": "3.2.3",
     "html-minifier": "4.0.0",
     "typescript": "5.5.2",
     "uglify-js": "3"