The objective of the game is simple. As you play, you will notice a giant block moving to the left, decreasing the play field. It is your job to push it back to the right side. If you succeed, you will get to the next level.

In order to push it back, you need to cause as much explosion as possible. You can do this shooting colored blocks. To do this, you have five beams at your disposal.

use the up and down arrow keys to select a different beam, and use the space bar to fire. Whenever you fire with one of the beams, its power meter will drop. If there is no power left, you can’t fire this beam anymore – but only for a short while, because the meter will automatically increase.

The block that you have to shoot come in three colors – red, green, and yellow. You can only shoot blocks that are in the same color as the beam – but you can change its color with the left and right arrow keys. If one of the colored blocks moves out of the screen before you can hit it, the giant block will move left a bit faster, so try to hit as much of them as possible.

If one of the start (the white dots) enters an explosion, it will explode as well, which can cause a chain of explosions, pushing the giant block more to the right.