diff --git a/src/diva/gameInit.ts b/src/diva/gameInit.ts
new file mode 100644
index 0000000..fcd8541
--- /dev/null
+++ b/src/diva/gameInit.ts
@@ -0,0 +1,11 @@
+import { Request, Response } from "express";
+
+export default function gameInit(req: Request, res: Response) {
+  const { cmd, req_id } = req.body;
+
+  res.send({
+    cmd,
+    req_id,
+    stat: 1,
+  });
+}
diff --git a/src/diva.ts b/src/diva/index.ts
similarity index 93%
rename from src/diva.ts
rename to src/diva/index.ts
index 3bd26a2..b86f175 100644
--- a/src/diva.ts
+++ b/src/diva/index.ts
@@ -1,13 +1,22 @@
-import express from "express";
 import logger from "debug";
-import read from "raw-body";
-
+import express from "express";
 import { Form } from "multiparty";
+import read from "raw-body";
 import { inflateSync } from "zlib";
 
+import gameInit from "./gameInit";
+
 const debug = logger("app:diva:io");
 const app = express();
 
+//
+// Routes
+//
+
+const routes = new Map<string, express.RequestHandler>();
+
+routes.set("game_init", gameInit);
+
 //
 // Message I/O middleware
 //
@@ -86,8 +95,6 @@ app.use(async function(req, res, next) {
 // Router
 //
 
-const routes = new Map<string, express.RequestHandler>();
-
 app.post("/", function(req, res, next) {
   const route = routes.get(req.body.cmd);
 
@@ -99,18 +106,4 @@ app.post("/", function(req, res, next) {
   }
 });
 
-//
-// Routes
-//
-
-routes.set("game_init", function(req, res) {
-  const { cmd, req_id } = req.body;
-
-  res.send({
-    cmd,
-    req_id,
-    stat: 1,
-  });
-});
-
 export default app;