Jungler is an arcade game where the player controls a snake-like creature in a maze. In the maze, there are three other such creatures, and the aim of the game is to destroy them before getting killed by them. The enemies will appear in three different colors with different lengths. Red ones are longer than the player and will be killed upon a head-on collision. Yellow ones are the same length as the player and are harmless. Green ones are shorter than the player and can be killed by colliding with their heads.
The enemies can be shot at, and if one is hit in its tail, its size will decrease by one segment. Creatures that are smaller will move faster and be harder to catch. At the same time, it's possible to increase the player's size by eating fruits that appear at random locations. However, this increases if the player is hit by enemy creatures' fire.