2018's best circle casual game "Expand Part" Expand Part is a fun and exciting game. The goal of this game is not to let any collision happen. It's an easy one-finger control, just tap the part to throw them out. Be careful, if any of your the part overlaps, you fail the level! HOW TO PLAY • Simply tap the screen to throw the part out. • The part may rotate clockwise or anticlockwise, and they change the speed all the time!