I've played it a bit, and it's decent. Can't say I noticed problems with the framerate, but that's not a pet-peeve of mine. The thing that bothered me a bit is the controls. The "analogue" touch-control isn't as easy to use as the one in Mario, since you're restricted to a specific graphical representation of a button on the left side. You can't feel it, so if you miss it, you won't move, or you'll go in the wrong direction. It gets better with practice, of course, but I can see it being a problem later in the game when things heat up. The graphics are a mixed bag. They're detailed and very nicely coloured and animated, but the textures and effects are very blocky. Sound is standard Rayman, very unintrusive. The game is basically Rayman 2 on the N64 with worse textures and effects, and less precise controls. Which means that if you don't care about the graphics and get used to the controls, you'll enjoy it.