You have to change the color of the Dwooz based on the portals which will appear when he is running. You must match the color to that portal to successfully pass through. You will loose a life if you hit a wall, or if you pass a portal without the correct color. You can slow down time in this game, the surroundings will slow down. You can activate this by pressing the left mouse button. You can hange the color of Dwooz by A,S,D keys and collect items by throwing balls at it using the W key. The Dwooz will keep running faster and faster.