Your mission in this action platformer with puzzle elements is to help Roy to climb to the top of Prizim tower to stop an invasion of color eating Void who want to destroy his world. Playing as Roy you can change the colors of your body to access different areas, and use different abilities. As you climb Prizim tower you will unlock upgrades for your abilities such as the ability to create portals and teleport from from place to place. Use "A" and "D" KEYS to move. Press "W" KEY to jump and use "S" KEY to go invisible when yellow or drop from ledge when hanging. Use J K L or click the screen to change the color of your body. Press SPACEBAR to perform actions for each ability. Press "R" KEY to flip switches and enter doorways. Have fun!