Cocaine Diesel

Cocaine Diesel is not for the faint of heart! It's a "social" FPS with an emphasis on drugs and criminality. The developers describe the social side of the game as follows: "meet the absolute scum of the internet on your traumatizing adventure through the most squalid corner of the web formerly known as Warsow Pickup." If that doesn't tickle your curiosity, not much will!  The game runs on the Qfusion 3D Engine (aka Quake II engine) and it runs on Windows and Linux.