If you don't know how to relax yourself in your leisure time? Why not try this puzzle game? ★Roller Ball★ contains the elements as below: -Slide Puzzle Games: Just move your fingers! -Jigsaw Puzzle Games: Train your reflexes and exercise your brain! -Physics Puzzle Games: Based on the real Physics, which is very addictive! -Eliminate Games: Enjoy the elimination pleasure! How to play ★Roller Ball★ : -Use your fingers to move the square and build a complete route from the beginning to the end.