Rayman DS is the worst Rayman 2 ever made, and the iPod Touch/iPhone comes next.
Rayman DS' graphics are not only worse than the original N64 version (they weren't that pixelized), it has got nonsense glitches, the touch screen interaction is a failure (if you are left hander I think it does not constitute a big problem, but how the heck can you shoot and jump if you are right-handed? An option to trade the letter buttons with the D-Pad buttons would have been nicer if it existed.) and running in diagonals with the D-Pad is a pain (My left thumb got hurted everytime I played long time in my original DS, now the gameplay is much more confortable when playing in a DS Lite, and surely in a DSi/DSi XL too). There's even an option to turn off the backlight of the upper screen and/or the down screen, when actually what it does is to turn off the screen/s completly. Imagine how useful it is turning off the backlight of the upper screen. And if that is done in the down screen, how do you know if there's a missing Lum, a missing cage, how much energy/oxygen Rayman has got and how much energy does have got the enemy? :boon:
The iPod Touch version which I tried for around midhour, despite of the nice graphics, the walking/running "button" is terrible at response. I don't know if finger prints interfered or if it was that bad the software of touch-recognization.