Sony Computer Entertainment America Inc. (SCEA) has announced that Gran Turismo 5 Prologue, the fifth installment of the billion-dollar selling racing franchise developed by Polyphony Digital Inc., is now available across North America, exclusively for PS3. The game comes with in depth car tuning, which allows players to adjust the vehicle's performance, including power, tyres, suspension and the ability for quick tuning whilst racing, a drift mode and a two-player split screen mode, as well as scheduled race events. Press 'read more' for details.