Come and play the game - Phyramid Brain. This is an exciting arcade game to test your reaction. Your main goal is to click to fill the circle on the screen. Release to complete the filling. You must be in a certain area of the circle to win. If the circle is smaller or bigger, you lose. The more you advance, the more difficult the levels. Try to win at all levels. The game has an exciting story, vivid graphics and convenient controls. It develops your reaction and attention. In addition, it is encouraged and allows you to have a good time. Compete with your friends in accuracy and speed. Become a champion of Phyramid Brain!