diff --git a/examples/game/lib/game_demo.dart b/examples/game/lib/game_demo.dart
index 6e53c6a028..699c03a63d 100644
--- a/examples/game/lib/game_demo.dart
+++ b/examples/game/lib/game_demo.dart
@@ -12,5 +12,7 @@ part 'explosions.dart';
 part 'flash.dart';
 part 'game_demo_node.dart';
 part 'game_objects.dart';
+part 'game_object_factory.dart';
+part 'player_state.dart';
 part 'repeated_image.dart';
 part 'star_field.dart';
diff --git a/examples/game/lib/game_demo_node.dart b/examples/game/lib/game_demo_node.dart
index 77730ffcc7..48cf262819 100644
--- a/examples/game/lib/game_demo_node.dart
+++ b/examples/game/lib/game_demo_node.dart
@@ -256,97 +256,3 @@ class Level extends Node {
     return position.y;
   }
 }
-
-enum GameObjectType {
-  asteroidBig,
-  asteroidSmall,
-  movingEnemy,
-  coin,
-}
-
-class GameObjectFactory {
-  GameObjectFactory(this.sheet, this.sounds, this.level, this.playerState);
-
-  SpriteSheet sheet;
-  Map<String,SoundEffect> sounds;
-  Level level;
-  PlayerState playerState;
-
-  void addAsteroids(int numAsteroids, double yPos, double distribution) {
-    for (int i = 0; i < numAsteroids; i++) {
-      GameObjectType type = (randomDouble() < distribution) ? GameObjectType.asteroidBig : GameObjectType.asteroidSmall;
-      Point pos = new Point(randomSignedDouble() * 160.0,
-                            yPos + _chunkSpacing * randomDouble());
-      addGameObject(type, pos);
-    }
-  }
-
-  void addSwarm(int numEnemies, double yPos) {
-    for (int i = 0; i < numEnemies; i++) {
-      double spacing = math.max(_chunkSpacing / (numEnemies + 1.0), 80.0);
-      double y = yPos + _chunkSpacing / 2.0 - (numEnemies - 1) * spacing / 2.0 + i * spacing;
-      addGameObject(GameObjectType.movingEnemy, new Point(0.0, y));
-    }
-  }
-
-  void addGameObject(GameObjectType type, Point pos) {
-    GameObject obj;
-    if (type == GameObjectType.asteroidBig)
-      obj = new AsteroidBig(this);
-    else if (type == GameObjectType.asteroidSmall)
-      obj = new AsteroidSmall(this);
-    else if (type == GameObjectType.movingEnemy)
-      obj = new MovingEnemy(this);
-    else if (type == GameObjectType.coin)
-      obj = new Coin(this);
-
-    obj.position = pos;
-    obj.setupActions();
-
-    level.addChild(obj);
-  }
-}
-
-class PlayerState extends Node {
-  SpriteSheet sheet;
-  Sprite sprtBgScore;
-
-  bool _dirtyScore = true;
-  int _score = 0;
-
-  int get score => _score;
-
-  set score(int score) {
-    _score = score;
-    _dirtyScore = true;
-  }
-
-  PlayerState(this.sheet) {
-    position = new Point(310.0, 10.0);
-    scale = 0.6;
-
-    sprtBgScore = new Sprite(sheet["scoreboard.png"]);
-    sprtBgScore.pivot = new Point(1.0, 0.0);
-    sprtBgScore.scale = 0.6;
-    addChild(sprtBgScore);
-  }
-
-  void update(double dt) {
-    // Update score
-    if (_dirtyScore) {
-
-      sprtBgScore.removeAllChildren();
-
-      String scoreStr = _score.toString();
-      double xPos = -50.0;
-      for (int i = scoreStr.length - 1; i >= 0; i--) {
-        String numStr = scoreStr.substring(i, i + 1);
-        Sprite numSprt = new Sprite(sheet["number_$numStr.png"]);
-        numSprt.position = new Point(xPos, 49.0);
-        sprtBgScore.addChild(numSprt);
-        xPos -= 37.0;
-      }
-      _dirtyScore = false;
-    }
-  }
-}
diff --git a/examples/game/lib/game_object_factory.dart b/examples/game/lib/game_object_factory.dart
new file mode 100644
index 0000000000..97a102f00a
--- /dev/null
+++ b/examples/game/lib/game_object_factory.dart
@@ -0,0 +1,51 @@
+part of game;
+
+enum GameObjectType {
+  asteroidBig,
+  asteroidSmall,
+  movingEnemy,
+  coin,
+}
+
+class GameObjectFactory {
+  GameObjectFactory(this.sheet, this.sounds, this.level, this.playerState);
+
+  SpriteSheet sheet;
+  Map<String,SoundEffect> sounds;
+  Level level;
+  PlayerState playerState;
+
+  void addAsteroids(int numAsteroids, double yPos, double distribution) {
+    for (int i = 0; i < numAsteroids; i++) {
+      GameObjectType type = (randomDouble() < distribution) ? GameObjectType.asteroidBig : GameObjectType.asteroidSmall;
+      Point pos = new Point(randomSignedDouble() * 160.0,
+                            yPos + _chunkSpacing * randomDouble());
+      addGameObject(type, pos);
+    }
+  }
+
+  void addSwarm(int numEnemies, double yPos) {
+    for (int i = 0; i < numEnemies; i++) {
+      double spacing = math.max(_chunkSpacing / (numEnemies + 1.0), 80.0);
+      double y = yPos + _chunkSpacing / 2.0 - (numEnemies - 1) * spacing / 2.0 + i * spacing;
+      addGameObject(GameObjectType.movingEnemy, new Point(0.0, y));
+    }
+  }
+
+  void addGameObject(GameObjectType type, Point pos) {
+    GameObject obj;
+    if (type == GameObjectType.asteroidBig)
+      obj = new AsteroidBig(this);
+    else if (type == GameObjectType.asteroidSmall)
+      obj = new AsteroidSmall(this);
+    else if (type == GameObjectType.movingEnemy)
+      obj = new MovingEnemy(this);
+    else if (type == GameObjectType.coin)
+      obj = new Coin(this);
+
+    obj.position = pos;
+    obj.setupActions();
+
+    level.addChild(obj);
+  }
+}
diff --git a/examples/game/lib/player_state.dart b/examples/game/lib/player_state.dart
new file mode 100644
index 0000000000..331517e73d
--- /dev/null
+++ b/examples/game/lib/player_state.dart
@@ -0,0 +1,45 @@
+part of game;
+
+class PlayerState extends Node {
+  SpriteSheet sheet;
+  Sprite sprtBgScore;
+
+  bool _dirtyScore = true;
+  int _score = 0;
+
+  int get score => _score;
+
+  set score(int score) {
+    _score = score;
+    _dirtyScore = true;
+  }
+
+  PlayerState(this.sheet) {
+    position = new Point(310.0, 10.0);
+    scale = 0.6;
+
+    sprtBgScore = new Sprite(sheet["scoreboard.png"]);
+    sprtBgScore.pivot = new Point(1.0, 0.0);
+    sprtBgScore.scale = 0.6;
+    addChild(sprtBgScore);
+  }
+
+  void update(double dt) {
+    // Update score
+    if (_dirtyScore) {
+
+      sprtBgScore.removeAllChildren();
+
+      String scoreStr = _score.toString();
+      double xPos = -50.0;
+      for (int i = scoreStr.length - 1; i >= 0; i--) {
+        String numStr = scoreStr.substring(i, i + 1);
+        Sprite numSprt = new Sprite(sheet["number_$numStr.png"]);
+        numSprt.position = new Point(xPos, 49.0);
+        sprtBgScore.addChild(numSprt);
+        xPos -= 37.0;
+      }
+      _dirtyScore = false;
+    }
+  }
+}