Look, I made a youtube video about the "real" Rayman 2...
It's what they originally planned to make before they thought about making it 3D. It's 2D in the style from Rayman 1.
At the end of the PS1 version, they showed us one level though... I recorded a bit of the gameplay.
Watch out for the crappy sounds though.
That it is, I've played that level! Back when I had just finished Rayman 2 when that strange level appeared, it was fun, but nowhere close to being as fun as Rayman 2 in 3D though
I always loved the Foutch cinematic. When the Axel music started playing, and Rayman's just hovering there, I actually thought: "Oh crap, I've heard that music before..." And then Foutch came up behind him and thumped him. It was pretty cool.