One word, disastrous.
First thing i'll tell you about is the graphics. Super blocky, super bad graphics. For their time they were OK, but now it's just horrible. The backrounds are really bad. Just a sprite on a nearly textureless ground. The characters models are OK though, at least you can tell what they're wearing. Everything on the characters are decent, but the graphics are really just bad.
Now, the audio is plain terrible. The music is ok, but you can't hear it because of the really loud noises the game has. When you land a single laggy punch, SMACK in the loudest way possible. You hear a yelp from the character. THAT'S ALL. Whenever you win in a tournament, you hear some wierd spanish guy's voice acting. It's in English, but they didn't even attempt to get the real voice actors, or anyone who sounded close for that matter. The thing I hate the worst about this game is the fact you select a character, and they say the stupidest, corniest line ever. What made it funny is when you select Trunks is he sounds like KRILLIN.
Now the gameplay is a REAL stinker. All the modes are like tournaments, versus a human, or versus a CPU. Now, you can do some interesting super fast techniques, if you know the very hard combination. You have to find it out on your own, since the practice mode does absolutely nothing to help. You have to find out how to use beams, do combos, and everything on your own. This means some people might take weeks before you master ONE character. So expect to do a skippy punch every 2 seconds. When you press a punch, kick, or ki attack button, the game litterally skips a couple frames and fires the attack at you. When you punch, your character skips and lunges foward to attack the opponent. You can do beam and beam clashes, and at least the damage system is leveled. However, you'll get whooped by a CPU that knows EVERYTHING. Have fun.
Overall, this game isn't even debatable. If you find a copy on the floor of your friend's house, it's more fun to put it in a dreamcast and hear the audio say "this belongs in a PS2." It's also fun to burn it. That's always fun. Buy some cheap russian gas and BURN IT. Something else more fun is to use it like a frisbee. I can't believe i'm saying this, but this all is probably a whole lot more enjoyment you'll ever get out of playing this game. It's an expensive frisbee, but you can also get some keys and scratch the living crap out of the disc. Come up with something useful to do with this game. DON'T PLAY IT.