This is another game where the rules shift as the game is played, but in a much more orderly fashion this time. The components are a board (a simple 3x3 grid), 6 counters, and 9 tiles (triangles, circles, and squares, in three colours). Each player gets three counters in their colour - one marked with a triangle, one with a circle, and one with a square. The board starts empty.
During the starting stages of the game, players may either place a tile on the grid, or place their counters on a vacant tile. The tiles are very much the key to the game; each tile is blank on one side, but has a rule on the other side. Rules are grouped by colour, with a maximum of one rule of each colour active at any time. Rule groups are as follows:
All a player has to do to win is to satisfy the current winning positions - at the end of either player's turn. From my experience so far, this is by no means easy; once all the tiles and counters are in play, a turn consists of moving a counter or tile according to the current rules; if a counter moves onto a tile of the same shape, then the tile is activated, and the rules change. This can lead to the situation where you could win under the current rules by a simple move, but your move will change the rules, and thus prevent you from winning.
A fun game, lasting for about 20 minutes, but not one to be taken too seriously.