First click the board to create a random placement of 'apples' (yin-yang symbols).
Then the two players each click two adjacent positions to place the tail and the head of a little snake.
Move the snake orthogonally any distance by clicking the target positions. All intermediate positions must be empty; but the target position you clicked may be an apple.
The snakes with grow in length whenever they eat.

When all apples have been eaten or if one snake gets stalemated, the longest snake wins. Counters on the left side show how many apples your snake has eaten.

Variants 1 to 3 have more and more apples.
Variants 4 to 6 also have blocking tokens (walls) on the board.

There is one alternative piece set available.

Note that this game has been designed for human playing human. If you want to play against the computer, you better play the solitair game 'Hungry Snakes' which has been especially designed for this purpose.