This is one of the games I play when I feel like having mindless fun. Post Apocalyptic Mayhem is a racing game, except honestly the racing doesn't matter. What really counts is the level of destruction you cause on the other drivers while racing.
The game comes with a variety of cars (ranging from an ice cream truck, police car, and more cynically, a mobile meth lab) that all play differently. Each car gets three weapons, which are activated by finding colored barrels.
Gameplay is pretty straightforward. Literally. You just drive down the track, collect weapons, and make it hell for the other drivers. If you can wreck another car, you get a point.
My big complaint about this is the DLC pack. The additional vehicles are included in the game already as opponents, the DLC simply unlocks them as playable. It is not particularly expensive, but it strikes me as somehow a part of the full game is removed and hidden behind a paywall.