The level design in Mario games has always been amazing. I don't see NSMBW as having superior level design to any of Mario's other outings. That may just be me but I actually think Galaxy 1+2 have way more intricate level designs. But then again the 3D Mario games levels have to be more intricate then the 2D ones because of that third dimension!
-JC7
"In God We Trust - In Games We Play " - Joel Reimer







