The Ghost of RubangB on 08 June 2008
It's definitely the best. Only other fighter I've played with this many charactes was Mortal Kombat: Armageddon, and everybody's almost exactly the same. That franchise got out of control. At least in Brawl the millions of characters are all different, except for the Star Fox clones.
Saturday Night Slam Masters is a distant 2nd. It's also 4 players, and Haggar's in it.
