Patzam

Patzam is a sort of moving 3D Tic Tac Toe where you remove the middle piece each time you make a row. The goal of the game is to get rid of your pieces and be the first to have only 2 left.

Rules:
Alternately, both players place one piece on one of the 18 spots of the 3D-board. When all the pieces have been played, middle pieces of any rows of the same color are removed.
Then, players successively slide one piece in order to make a row (and remove the middle piece) or block the opponent.
The first player who has only 2 of his own pieces left on the board is the winner.