This is yet another clone of the classic arcade game Centipede. The object is to keep your gun turret from being destroyed as long as possible. To help accomplish this, it helps to shoot the insects, mushrooms, and the Crawly-Pede, a long insect that resembles a caterpillar. When you completely kill the Crawly-Pede, you go to the next level and another Crawly-Pede comes to try to get you.
PLBM Games specializes in classic games, and this game is another shining example of their nostalgic work.