I think its a cool game, with more track types and so on. BUT, I don't think that it is quite as realistic as NL, I think the g's in NL are pretty much correct, but the g's calculated in SM are often quite wrong I feel, also, the NL editor is much easier to use than the SM editor, although once you have been using it for a while, they are both probably about as easy as each other. Sounds on SM are much better I think. SM is slightly too slow for me, when you are riding the coasters in NL they just look like they are going faster, even if they are actually travelling at the same speed. In SM, even the best people, still get kinks in the track that can't be gotten rid of for some reason, well I know all the tracks that I have downloaded have had little kinks in them in places. But SM is still a cool game, probably just about as good as NL is [:)]