9 is all about making 9s.
72 levels to solve.
27 ∞ REMIX puzzles.
9s are made by sliding and adding numbers together.
Each 9 you make becomes a block which cannot be passed.
The more blocks there are, the more difficult it becomes.
Later levels start with blocks, many of which have special properties.
At the end of each set of levels you are presented with a binary choice.
Playable in white or black.