I found a ton of new stuff in that prototype.
First off, the disc contains videos not played by the prototype in which Rayman still has his old R2 model. Sadly, no audio. Some of them are very different from the final cutscenes!
What's more, it also contains 2 full texture archives from different dates:
app.box.com
- One from an old (dated november 2000!) version of the game, which includes textures for the aquatic world and various other places that never made it into the final game. In the linked archive, you can find this in "textures_cnt". The zaqoas, desert, vegetal and gorge folders are super interesting, and Charact contains a bunch of textures for old designs.
- One from the game at the time of the prototype (May 17, 2002). You can find this in "textures_txc". This includes many final textures, but also a ton of textures that never made it into the final game. Clark and Ssssam are there, old Rayman costume textures, the old autumn mountain level textures, and more.
Lastly, I also found some old arrangements for R3 tracks that I'll add to RayTunes later. Nothing very special.
This is already pretty big, but I have yet to add support for this prototype to Raymap!
I'll keep you guys updated if I find anything more.