MDK is a third person shooter for the PC and Playstation 1. Personally I don't remember too much of this game, but I do remember it being my first M rated title. What I do remember though was that it was a lot of fun, and pretty hard at the time. I had a Playstation version of the game(sadly lost it in a move) but I herd the PC version was pretty powerful for it's time
MDK was rumoured to be short for Murder Death Kill and it encouraged sniping headshots and nuking things
It was a fantastic game, hilarious and gruesome