2D destructable terrain with collisions in MMO Task What I want is to create destructable terrain (like in Worms) and collisions with this terrain (with calculated normals) that will be fast enough to work on server machine. Basically lets say that I want to make Worms Online (I don't really) using model CLIENT SERVER, not peer2peer. Approaches I read about People in other threads were suggesting using bitmaps and perpixel collisions, but is it fast enough to handle i.e. 100 games simultaneously? Another approach is using vectors to track outline of terrain, but it seems also really CPU heavy and I didn't find any good example of that. So guys what is your proposal?