Cobra

Cobra is a 1-player arcade game for the VIC-20.

With your help, the giant cobra wanders around the garden. He must clear it of all the other beasties that keep appearing for a quiet life and a full stomach. He scores 5 points for each small black snake he eats. 10 points for each purple bug, and 15 points for each blue spider. There are dangers though. The cobra must not eat the poisoned green apples or cross his own tail or bump into the garden walls.

The player starts with 3 lives, and clears each level after gathering a certain number of points. New beasts keep appearing, and the cobra's tail progressively elongates.