This is the best fighting game I've ever played and best for multiple players.  There are 8 regular characters plus 4 secret ones, each with over a dozen different moves.  There are 8 regular battle arenas (themed after the 8 characters) and 1 secret one.  Starting with three basic moves and playing with another novice, you can master all of the characters and all of their moves.  This game is unfortunately rigidly divided by skill, and good players will consistently beat worse ones.  I recommend this for everyone, especially those who enjoy games that require quick descisions.