you test your quickness. In this game, there are four blue parts and one red part; you control the red part to avoid crashing from other blue ones. Once the game starts, you will find that all five parts are limited in the square frame, and you can only move the red part in the limit of this square frame. You can use the mouse to control your part. There are two game modes-mode record and mode hazard. In mode record, the cycles of the game mode have been fixed, all of four blue parts will move regularly. In mode hazard, the cycles of game mode run out of regular. When you play good in mode record, you can choose mode hazard for challenge. Good luck.