diff --git a/app.json b/app.json
new file mode 100644
index 0000000..750a34e
--- /dev/null
+++ b/app.json
@@ -0,0 +1,17 @@
+{
+	"lang": "en-us",
+	"name": "RollDice",
+	"description": "Chinese Dice Game",
+	"start_url": "/",
+	"background_color": "#F44336",
+	"theme_color": "#F44336",
+	"orientation": "any",
+	"display": "standalone",
+	"icons": [
+		{
+			"src": "media/logo.png",
+			"sizes": "1024x1024"
+		}
+	]
+}
+
diff --git a/app/app.json b/app/app.json
deleted file mode 100644
index e69de29..0000000
diff --git a/chrome.js b/chrome.js
deleted file mode 100644
index e4c1cf7..0000000
--- a/chrome.js
+++ /dev/null
@@ -1,8 +0,0 @@
-chrome.app.runtime.onLaunched.addListener(function() {
-	chrome.app.window.create('index.html', {
-		'outerBounds': {
-			'width': 500,
-			'height': 500
-		}
-	});
-});
diff --git a/manifest.json b/manifest.json
deleted file mode 100644
index cae139d..0000000
--- a/manifest.json
+++ /dev/null
@@ -1,11 +0,0 @@
-{
-	"name": "RollDice",
-	"description": "Chinese dice game",
-	"version": "0.1",
-	"manifest_version": 3,
-	"app": {
-		"background": {
-			"scripts": ["chrome.js"]
-		}
-	}
-}
diff --git a/media/logo.png b/media/logo.png
new file mode 100644
index 0000000..249517d
Binary files /dev/null and b/media/logo.png differ