First click the board to allow Zillions to randomize the board. Sixteen 4x4 tiles will be displayed with some black squares at their border.

Your task is to swap pairs of such 4x4 tiles until all borders match in the following sense: A black spot on a tile must meet a corresponding black spot on the border of the adjacent tile. Here the borders are 'wrapped around': the bottom border is treated as joint to the top border, the left border joint to the right border.

You swap two 4x4 tiles simply by clicking each of the two tiles. The tiles cannot be rotated.

Variants: there is also one variant with nine 4x4 tiles.

I recommend you use option View\EnlargeBoard for easier play. Please note that there is an alternative piece set.

Similar Zillions games: Jigsaw, Harry, Match.