diff --git a/server/game.js b/server/game.js
index d0837ac..4f3109e 100644
--- a/server/game.js
+++ b/server/game.js
@@ -4,21 +4,27 @@ import {performance} from 'perf_hooks';
 // 3rd party.
 // 2nd party.
 import {InputPacket} from '@avocado/input';
+import {World} from '@avocado/physics/matter/world';
 import {Synchronizer} from '@avocado/state';
 import {Ticker} from '@avocado/timing';
+import {Room} from '@avocado/topdown';
 // 1st party.
 import {SelfEntityPacket} from '../common/packets/self-entity.packet';
 import {WorldTime} from '../common/world-time';
 import {createEntityForConnection} from './create-entity-for-connection';
-import {createRoom} from './create-server-room';
 // Create game.
 export default class Game {
 
   constructor() {
     const config = this.readConfig();
     // Room.
-    this.room = createRoom();
-    this.room.world.stepTime = config.simulationInterval;
+    this.room = undefined;
+    Room.load('/kitty-fire.room.json').then((room) => {
+      room.world = new World();
+      room.world.stepTime = config.simulationInterval;
+      this.synchronizer.addChild(room);
+      this.room = room;
+    });
     // World time. Start at 10 am for testing.
     this.worldTime = new WorldTime();
     this.worldTime.hour = 10;
@@ -26,7 +32,6 @@ export default class Game {
     this.informables = [];
     // State synchronization.
     this.synchronizer = new Synchronizer([
-      this.room,
       this.worldTime,
     ]);
     this.informTicker = new Ticker(config.informInterval);
@@ -40,7 +45,9 @@ export default class Game {
 
   destroy(fn) {
     clearInterval(this.mainLoopHandle);
-    this.room.destroy();
+    if (this.room) {
+      this.room.destroy();
+    }
     fn();
   }
 
@@ -56,7 +63,9 @@ export default class Game {
       }
     });
     // Add entity to room.
-    this.room.addEntityToLayer(entity, 0);
+    if (this.room) {
+      this.room.addEntityToLayer(entity, 0);
+    }
     // Initial information.
     const packets = this.synchronizer.packetsForUpdate(true);
     packets.unshift(new SelfEntityPacket(entity.numericUid));
@@ -82,7 +91,9 @@ export default class Game {
       const elapsed = (now - lastTime) / 1000;
       lastTime = now;
       // Tick synchronized.
-      this.room.tick(elapsed);
+      if (this.room) {
+        this.room.tick(elapsed);
+      }
       this.worldTime.tick(elapsed);
       // Tick informer.
       this.informTicker.tick(elapsed);