Play Color Theory Online game at Cooler Maths Games, which an interesting platform game. In this game, you can get to the exits by changing colors to find the exit point. This is an educational game based on the theory of colors. As you know the primary colors are Green, Blue, red and secondary colors are yellow, cyan and magenta. Bubble Master is also a good game which is free available here. Play in mute mode.
How to Play: Use Arrow keys to Jump and move. However, R key is to restart the level if you feel that you are stuck anywhere.