Press and hold the arrow keys to move Press and hold SPACE to jump Apparently, you can walk and jump at the same time to sprint, no idea why this happens, but it's cool and handy for the real game. Actually, it's probably because you change your X by 5 twice, the game thinks you're jumping and lets you move, but you aren't jumping so you're technically moving twice. You can press a key that isn't used to pause your animation, I know excactly why this happens >:)