Screamer 4x4 is the most bad ass off road game i have ever played to date. It doesnt have the best graphics in the world, but its way realistic. awesome physics as well. You have to do rock crawl competitions, as well as pre-runner stuff. mosty jeeps on there but my fav vehicle on the game is a huge ass 89 toyota hilux with a chevy 572 in it! lol. You can change engines in most of the rigs as well as tires. during the game u can switch to 3rd person or in cab driving which is way fun cuz u have to look around and the only way to tell how fast ur going or rpms is to look at the gauges on ur dash! You can drive in 2 or 4 wheel drive and have e-lockers (during the game u can choose to lock or open the diffs) u can somewhat adjust tire pressure (low, med, hi) theres also body damage