There is no better platform for the budget-minded gamer than the iPhone. The App Store is bursting with games and applications at bargain prices -- including no shortage of free stuff. Many big titles have so-called "lite" versions you can download for nothing and try out a game before committing your download dollars. But let's be real here: you get what you pay for. A lot of the free stuff on the App Store is still over-priced... your time is worth something, isn't it?