File list (Check if you may need any files):
SpaceInvaders
.............\build
.............\build.xml
.............\dist
.............\manifest.mf
.............\nbproject
.............\.........\build-impl.xml
.............\.........\genfiles.properties
.............\.........\private
.............\.........\.......\config.properties
.............\.........\.......\private.properties
.............\.........\.......\private.xml
.............\.........\.......\profiler
.............\.........\project.properties
.............\.........\project.xml
.............\src
.............\...\game
.............\...\....\assets
.............\...\....\......\Asset.java
.............\...\....\......\AssetLoader.java
.............\...\....\......\AssetManager.java
.............\...\....\......\DrawnAssetMessage.java
.............\...\....\......\GraphicalAsset.java
.............\...\....\......\ImageAsset.java
.............\...\....\......\ImageAssetRibbon.java
.............\...\....\......\ImageAssetSequence.java
.............\...\....\......\ImageAssetTile.java
.............\...\....\......\MidiAsset.java
.............\...\....\......\SoundAsset.java
.............\...\....\......\SoundAssetAssembly.java
.............\...\....\......\SoundAssetClip.java
.............\...\....\components
.............\...\....\..........\Bar.java
.............\...\....\..........\Button.java
.............\...\....\..........\TextElement.java
.............\...\....\..........\TextField.java
.............\...\....\..........\ToggleButton.java
.............\...\....\engine
.............\...\....\......\GameEngine.java
.............\...\....\......\GameInputEventManager.java
.............\...\....\......\GameLayer.java
.............\...\....\......\GameObject.java
.............\...\....\......\GameObjectCollection.java
.............\...\....\......\GameObjectCollider.java
.............\...\....\......\GameObjectSerialiser.java
.............\...\....\......\GameObjectUtilities.java
.............\...\....\......\GameStatisticsRecorder.java
.............\...\....\geometry
.............\...\....\........\Box.java
.............\...\....\........\Circle.java
.............\...\....\........\Shape.java
.............\...\....\physics
.............\...\....\.......\.LCKBasicJoint.java~
.............\...\....\.......\Arbiter.java
.............\...\....\.......\Body.java
.............\...\....\.......\BodyBuilder.java
.............\...\....\.......\Collider.java
.............\...\....\.......\CollisionSpace.java
.............\...\....\.......\Contact.java
.............\...\....\.......\FixedJoint.java
.............\...\....\.......\HingedJoint.java
.............\...\....\.......\Joint.java
.............\...\spaceInvaders
.............\...\.............\AlienMissile.java
.............\...\.............\AlienShip.java
.............\...\.............\Base.java
.............\...\.............\Explosion.java
.............\...\.............\images
.............\...\.............\......\BackgroundSky.png
.............\...\.............\......\City.png
.............\...\.............\......\explosion.png
.............\...\.............\......\ImageAssets.txt
.............\...\.............\......\Missile00.png
.............\...\.............\......\Missile01.png
.............\...\.............\......\Missile02.png
.............\...\.............\......\Missile03.png
.............\...\.............\......\Mothership00.png
.............\...\.............\......\Mothership01.png
.............\...\.............\......\Mothership02.png
.............\...\.............\......\Mothership03.png
.............\...\.............\......\Mothership04.png
.............\...\.............\......\Numbers.png
.............\...\.............\......\Shield.png
.............\...\.............\......\Ship.png
.............\...\.............\......\Shot.png
.............\...\.............\......\SpaceInvadersTitle.png
.............\...\.............\......\TitleArcadeMachine.png
.............\...\.............\......\TitleInvader.png
.............\...\.............\......\TitleScreenShot.png
.............\...\.............\InvadersLayer.ja