The main objective playing the game is to fill the empty space while at the same time capturing roaming monsters by building a wall around them. In order to advance to the next level, players are required to fill at least 80% of the available space. While playing, you should focus on dodging monsters making sure that they do not touch you while you try to get your power ups by picking up randomly appearing items around the screen.
To play the game, players simply need to move the paxcon into the empty area and then back to the wall in order to capture the area. It is very important to make sure that none of the monster touches you or the wall behind which follows you. Also, try as much as possible to grab the power ups whenever they show up on the screen since doing so will either make you move faster or better yet slow down the monsters. Once 80% of the area has been filled then you automatically advance to the next level. The game progress is shown on the top right end of the screen while any remaining lives are shown on the top left side of the screen.