In the six years since Grand Theft Auto III, a slew of games have tried to become "the next GTA," but so far none have really succeeded. There have been a lot of admirable attempts, though, and with the advent of the Xbox 360, a few have even outpaced GTA technologically. Their advantage might not last long though, as the original series will answer back in October with the release of Grand Theft Auto IV. Until then, though, Games Radar's got a lot of pretenders to the throne to sift through. So why not judge each one on its own merits and figure out which one's been doing the best job?