Snakes

Snakes can be described as a simplistic variation on the Centipede theme, crossed with the obscure Atari VCS game Sssnake. You move your little man around on a screen populated by a few spade-like mushrooms, when from the borders, a snake slithers onto the screen. The snake steams straight ahead until it bumps into a wall or a mushroom, in which case it makes a turn. You can shoot the snake and make it disappear, but only if you hit its head, which requires precise timing. If you wait for too long, more and more snakes enter the screen, and sooner or later you will collide with one of them, and it's game over.