Sega has Crazy Taxi (iTunes Link) for the iPhone, iPod Touch, and iPad in the iTunes App Store and for Android in the Google Play store for FREE (regularly $4.99) for a limited time.

Hey hey, come on over and have some fun with Crrrrrazy Taxi! Barrel through traffic packed streets, hurdle off parking garages, and crazy combo your way to crazy money in a wild frantic race to scare up the most fares. In Crazy Taxi, time is money, and only the craziest cabbies come out victorious.