Free tournaments open to everyone regardless of skill level, as long as you don't cheat.
The Crap Tournament is a yearly MAME competition where all the titles are selected based on their relative obscurity or overall lousiness. Every year brings in new pure crap and some hidden gems - you'll play some of the worst games ever made, and discover some amazing titles you never would've played without the tournament. The games are hilarious, but the competition is fierce.
Think you're a true gamer? Come prove it in the Crap Arena.