Or... Rayman Blast... another dream game, but better. It was a really cheap fighting game. For DOS. It used fake 12-bit truecolor palette (I just saw examples of Allegro, you know). The fighters that were already unlocked were Tarayzan, Something Blue, Antitoon and Moskito. So I ran story mode with Moskito and I saw normal, 8-bit 2D world! When I destroyed 500 Livingstones, I came to 8-bit 3D world, when I fought Dark Rayman (and, I unlocked it). Then, there was 12-bit bonus level, that I couldn't win and, I saw, I had got -1 life! When I got dead, game crashed.