WORLD 9-2 Increase time limits for 2- and 3-players WORLD 12-1 A little gentler WORLD 12-2 Eliminate Don't Press button at the end WORLD 12-3 Change the width of blocks to jump to, depending on the number of players WORLD 12-4 Reduce number of spikes by one WORLD 15-2 Change the number of color boxes depending on the number of people. WORLD 15-4 Widened the angle of view. More gentle except for switches and stairs