The iPhone you carry on your hand can do alot of things including
entertaining you. iPhones have lots of free games you can download and
play and also you can play MINICLIP games tailored for iPhones by going
to this link http://www.miniclip.com/games/genre-1194/iphone/en/
games on your iPhone. The list below are games that would not only
entertain you but will also challenge your brain. All iPhone games can
be downloaded from apple itune application store; http://itunes.apple.com/WebObjects
1. Cube
Cube is a single-player and multi-player first person shooter that
gives satisfying and fast old school gameplay. This can be a
landscape-style engine that pretends to become an indoor FPS engine,
which combines high precision dynamic occlusion culling with a form of
geometric mip-mapping overall world.