good
I owned the original N64 version "Super Smash Bros." and this is much better. The controls have a slight learning curve to them and each character does as well.
As usual there is always one or two characters that are just totally BROKEN.
Overall this is a great multi-player game. Single player can keep you going for hours if you change what you are doing every once in a while.
The hidden characters are sort of hard to get but once you do get them you will not be let down.
Again I say overall a good game. If you are looking for a good multi-player game or just a wonderful way to waste several hours out of a day head to your local game shop and pick up a copy!