GemStone Challenge credits :
- Design, Graphics and programming by Julien Wyart
- Powered by cocos2d Application framework for iphone (www.cocos2d-iphone.org)
- Music : Arcade Music Loop by MartynHarvey, Starian by MusicShake (bought on www.audiomicro.com)
- Jungle Fever Font from www.1001freefonts.com
- Graphic Textures from the Genetica Texture Packs (www.spiralgraphics.biz)
- Thanks to my wife Gwenaël
- Thanks to ray wenderlich (www.raywenderlich.com) for his helpful tutorials