The object of the game is to destroy as many enemies as possible. During every level, you must destroy all the segments of a centipede. Once the centipede enters the bottom area of the screen where the gun moves, the player is in danger of colliding with the centipede. The centipede will break into pieces as its segments are shot. Once it makes it to the bottom of the screen, it heads back up until it reaches the top of the player zone. It then repeats the process. Once the centipede has hit the bottom of the screen, new segments are created that move within the player zone. When a centipede segment hits a mushroom or another segment, it reverses direction.

Every level, the centipede configuration is different. On the first level, all segments are attached. then on the next level, one segment is independent. On the next, two are independent, and so on until all segments are independent.

The spider is another enemy that threatens the player. It bounces around within the player zone, but when it hits a mushroom, the mushroom disappears.

The flea will drop from the top of the screen and fall all of the way to the bottom when there are less than a certain number of mushrooms in the player zone. It leaves mushrooms behind.

The scorpion streaks across the screen periodically, changing any mushrooms it hits into poisonous mushrooms. When a centipede segment hits one of these, the centipede plummets to the bottom of the screen and then heads back up.

Extra lives are awarded every 12000 points by default.

Cheats, Tricks, Bugs, and Easter Eggs