KarBOOM is a fast-paced local multiplayer car-combat game for Windows, Linux and Mac. Knock other players out the ring, chase the flag, play kar football, and bet on how long you can survive with everyone hunting you! Play in teams or every kar for itself!
Brief gameplay video of me getting owned by some bots in the latest public version of KarBOOM. Sorry for the poor quality -- I'm not sure what size people expect videos to be online, and I don't have much in terms of capture software.