Click the board at an empty position to set Zillions randomize the steup. In addition to the two tokens already on the board, eight more will drop.

You will see a setup containing an equal number of red and yellow tokens. Your task is to swap the positions of the red and yellow tokens.

You can only move pairs of tokens, and only into the direction of their alignment. When you move a token north, for example, its southern neighbour will also be transported as if it would be glued to the other token.

Some variants have black no-go areas (walls).
You cannot move any token onto a wall or over a wall.

Random-setup variants:
You win when you have swapped all tokens.
The target positions are marked by coloured dots.
Try to use as few moves as possible.

Fixed-setup variants:
In the variants with fixed setups a target number of moves is shown at the top border.
There is also a counter showing the number of moves you have played.

Solutions are attached (click Help/ShowSolution).
All solutions have been found by hand; so maybe you can even improve on them.

Please note that there are eight alternative piece sets available.