This is a very simple game. The minimalist painting style and simple game playing method are very suitable for leisure time. You only need to move your mouse to make the squares collide with each other, and then you can enter the next level.

Press WASD to control the movement of the small square, so that the small square collides with the red hollow square. It should be noted that the small squares are walking along the wall in a straight line, you should pay attention to observation.