Use the arrow keys and/or the mouse to get to the portal to complete the level. At the top of the screen there is always a hint to help you complete the level. There is a pause button on the top right corner of each level and, after sixty seconds, a hint button appears to help you. There is a total of thirty-one levels; thirty normal levels and one hidden level. Good luck! :) P.S. the congratulations screen is a level
YAY