Suprisingly good all the way through.
The Warriors the game by Rockstar Toronto on PS2 and Xbox is based on this cult classic movie. The basic premise or graphics is nothing special, but the outcome is a great game. The Warriors the game expands the perspective greatly and about 80% of the game happens before the actual movie. This makes the player care about the plot and characters much more than just seeing the movie. Actually it would be better to first play the game and only after then watch the movie.
Graphics are ugly just like Rockstar Games usually are. They still do their job and the back alleys of New York look like a living and breathing city. Luckily the graphics are not the main star here: this game is very much story driven experience. This fact becomes all the more apparent in good voice acting and lots of cinematic cut-scenes.
Gameplay is a lot like Grand Theft Auto, but not as free roaming. Missions are varied with a lot of bonus missions and side quests, but towards the end it becomes a little repetitive.
In my personal opinion this is the best game made based on a movie and just a bit better than The Godfather by Electronic Arts.