Your goal is to fill the empty space and capture the monsters by building a wall around them. You can advance to the next level once 80% of the space is filled. Don't let the monsters touch you, and try to get the power-ups that appear randomly around the screen.

Your goal is to fill the empty space and capture the monsters by building a wall around them. You can advance to the next level once 80% of the space is filled. Don't let the monsters touch you, and try to get the power-ups that appear randomly around the screen.