In the beginning i use 3ds as the map, but when it very big fps down. What format is better? I heard that majority of 3d programers use BSP trees(but it for action games, i think, if i wrong please correct me). BSP trees? What is it? Can i use it as the map for carmageddon style game(if(yes && it is the one of best ways) where can i find some tuts or samples and EDITOR)