Legend of Dungeon developer RobotLovesKitty participated in Ludum Dare 28, producing one of the quirkiest titles I've played in quite some time. Cat Gentlemans Play: Insult Spinner 10 Cents is a two-player competitive browser game that takes about 30 seconds to experience.

One player uses the Q and W keys, while the other uses O and P. You spin a wheel to pick an insult, have a slap fight, then a ten-pace duel. All using just those two keys. Honestly, I feel like I can't do the absurdity of it justice. Just grab a partner and give it a shot.

[Play Cat Gentlemans Play: Insult Spinner 10 Cents]