The DS version of this game restricts how many objects are on screen at once. I have no idea why they did this, they're lines. It shouldn't be that graphically demanding. The story mode essentially turns Line Rider into a puzzle mode, which is interesting at first but gets kind of boring pretty quick. The style of the game itself isn't great either and the CGI cutscenes are dreadful.
This game overall doesn't do much different from Line Rider at its purest form. I was really excited about it as a kid, but that was because it was something familiar.