In a 2D fighting game, fighters face off on a flat arena: punches, blocks, throws, and combos decide everything, and a round lasts a minute or two. There are classics of the genre with a huge list of moves like Street Fighter and Guilty Gear, as well as small indie brawls for two players on a single keyboard. The more you practice, the more interesting it becomes.
Start by sorting by rating — this will put the best games available for torrent download at the top.