As you may know, I’m all about the collision detection. So I was quite pleased to find this tutorial on the Seperating Axis Theorem on the Metanet site. Basically, the seperating axis theorem lets you get early outs on a lot of collision checks, because of the brilliantly simple theorem that if two shapes are projected on a plane, and any one of those projections do *not* intersect, then the objects cannot be in collision. Go check it out! It may solve you sloping platform game problems!