There are 25 unique non-border pieces. They are always oriented the same direction and arranged in a 5 by 5 grid (pictured above). The grid pattern repeats.

Stack pieces of the same shape. Move two stacks near to each other, and the game will automatically attach the correct pieces together.



If a piece is the right shape but doesn't fit, shift over 5 pieces and try again. The piece will snap onto the mat if it is in the correct position. It does not need any adjacent connected pieces to stick to the mat.