Crash Twinsanity is a top notch platformer that is slightly better on the ps2.
The Good:
It has pretty good graphis and astounding music. It has levels that you want to play again and again.
4 playable characters- games with only one playable character suck. You can be Nina with her Bionic hand,m Cortex with his Ray Gun, Crash, of course, and Crash and Cortex combined in many different situations!
Hilarious combination of Crash and Cortex, with funny moves and cool clips. Almost free-roaming environment and basically controlable camera.
The Bad:
A lot of glitches. Too hard to be a kid's game at some parts. There are not enough save points. Ther should be some after each hard part.
The Ugly:
Cortex/ Nina
Overall, 8.5/10. I would recommend it to any Crash Fan, but CTTR, CNK and the two new games(Mind over Mutant and Crash of The Titans) are better. Improves on the psone games, though.
It rules, basically.