To be fair, everything is 0 or 90 degrees in the original game too. Generation's Green Hill Zone was more on the realistic side, while Forces is going for something more stylized. It seems almost like a poorly done cross between Generations an the original game. Main reason it probably looks so bad is the sand. It just doesn't work in GHZ. I didn't even realize it was supposed to be sand at first. I looks like a models that doesn't a textures applied to it.