For N64 its not all that bad. But definently a rental, not a buy.
Theres alot of different charecters to get, and thats probably the best thing in the game, along with the fun factor of fighting prize fights to train your charecter to make him better.
The gameplay is very shallow, sounds not all that great, and the graphics could have been better...
You and your friend train a charecter and have them duke it out, its alot of fun.
Oh yeah, in this one if you uppercut a guy when he's low on life he'll fly out of the ring, thats good for a lil chuckle.