diff --git a/client/src/components/GameControls.vue b/client/src/components/GameControls.vue
index 90c90d8..bafc736 100644
--- a/client/src/components/GameControls.vue
+++ b/client/src/components/GameControls.vue
@@ -17,7 +17,7 @@ export default {
   },
   methods: {
     startGame() {
-      alert('start game')
+      this.$engine.startGame()
     },
   },
 }
diff --git a/client/src/plugins/engine/callApi.js b/client/src/plugins/engine/callApi.js
new file mode 100644
index 0000000..11aef6e
--- /dev/null
+++ b/client/src/plugins/engine/callApi.js
@@ -0,0 +1,12 @@
+import buildUrl from 'build-url'
+
+export default async function(path, queryParams) {
+  const { $axios, $config } = this.context
+
+  const url = buildUrl($config.serverBaseUrl, {
+    path,
+    queryParams,
+  })
+
+  return await $axios.get(url)
+}
diff --git a/client/src/plugins/engine/fetchUpdate.js b/client/src/plugins/engine/fetchUpdate.js
index 7a14aad..9c8b2e1 100644
--- a/client/src/plugins/engine/fetchUpdate.js
+++ b/client/src/plugins/engine/fetchUpdate.js
@@ -1,7 +1,5 @@
-import buildUrl from 'build-url'
-
 export default async function() {
-  const { store, $axios, $config } = this.context
+  const { store } = this.context
 
   if (this.shouldStop || !this.isActive) {
     this.isActive = false
@@ -11,14 +9,11 @@ export default async function() {
 
   let delay = 0
   try {
-    const url = buildUrl($config.serverBaseUrl, {
-      path: '/api/sync',
-      queryParams: {
+    const response = await this.callApi('/api/sync', {
         v: store.state.engine.version + 1,
         g: store.state.engine.user?.game,
-      },
     })
-    const response = await $axios.get(url)
+
     store.commit('engine/setJson', response.data)
   } catch (e) {
     const { status, statusText } = e.response
diff --git a/client/src/plugins/engine/fetchUserInfo.js b/client/src/plugins/engine/fetchUserInfo.js
index c086c4e..a2dc292 100644
--- a/client/src/plugins/engine/fetchUserInfo.js
+++ b/client/src/plugins/engine/fetchUserInfo.js
@@ -1,8 +1,8 @@
 export default async function() {
-  const { store, $axios } = this.context
+  const { store } = this.context
 
   try {
-    const response = await $axios.get('/api/userinfo')
+    const response = await this.callApi('/api/userinfo')
     store.commit('engine/setUser', response.data)
   } catch(e) {
     store.commit('engine/setUser', undefined)
diff --git a/client/src/plugins/engine/index.js b/client/src/plugins/engine/index.js
index c404f94..9657a47 100644
--- a/client/src/plugins/engine/index.js
+++ b/client/src/plugins/engine/index.js
@@ -1,7 +1,9 @@
+import callApi from './callApi'
 import start from './start'
 import stop from './stop'
 import fetchUpdate from './fetchUpdate'
 import fetchUserInfo from './fetchUserInfo'
+import startGame from './startGame'
 
 export default (context, inject) => {
   const engine = {
@@ -10,10 +12,12 @@ export default (context, inject) => {
     isActive: false,
     shouldStop: false,
 
+    callApi,
     start,
     stop,
     fetchUpdate,
     fetchUserInfo,
+    startGame,
   }
 
   inject('engine', engine)
diff --git a/client/src/plugins/engine/startGame.js b/client/src/plugins/engine/startGame.js
new file mode 100644
index 0000000..93f1f72
--- /dev/null
+++ b/client/src/plugins/engine/startGame.js
@@ -0,0 +1,3 @@
+export default async function() {
+  alert('start game!')
+}