use your mouse to guide the ying and yang and hit the enemy before he gets to the door of your hotel!
when you press the space bar the ying and yang follows your mouse. It is called a mouse tester because if your mouse is glitched the ying yand will not hit the enemy.If your mouse is fine it will hit the enemy before he gets to the door of the hotel. if he gets to the door of the hotel he will go up the elevator and kill you.If you get him before he gets to the door he will die.the main point of the game is that he dosent get to the hotel so he cant kill you.