Primary is about Roy, a super soldier in the land of the Hueman, who must climb to the top of Prizim tower to try to find a way to close the portal that is allowing horrible black creatures into his world. Finish all floors and enter the elevator to get to the next level.
Press W to jump, A and D to move left and right. Press S to go invisible when yellow or drop from aledge when hanging. J K L or clicking the screen changes the color of your body. The space bar does an action for each ability. Press R to flip switches and enter doorways. The first level contains a quick tutorial so you know what you're doing.