diff --git a/app/app.json b/app/app.json
new file mode 100644
index 0000000..e69de29
diff --git a/chrome.js b/chrome.js
new file mode 100644
index 0000000..e4c1cf7
--- /dev/null
+++ b/chrome.js
@@ -0,0 +1,8 @@
+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
new file mode 100644
index 0000000..cae139d
--- /dev/null
+++ b/manifest.json
@@ -0,0 +1,11 @@
+{
+	"name": "RollDice",
+	"description": "Chinese dice game",
+	"version": "0.1",
+	"manifest_version": 3,
+	"app": {
+		"background": {
+			"scripts": ["chrome.js"]
+		}
+	}
+}