Flick to the right for the Bluetooth-Multiplayer and to the left for the Singleplayer.
Features:
✓ Change the game-mode without navigating through any annoying menu
✓ Multiplayer-mode over bluetooth
✓ Singleplayer-mode
-Easy
-Normal
-Hard
✓ Multiplayer-mode
✓ Support for iPhone 4 - Icon and Images are adapted to the high-resolution Retina Display
✓ Fast startup time