Atrio is played on an octagon with 3 marbles per player. Pieces are pushed away by playing a dark marble. The first player who gets his marbles in the inner circle or who ousts one of the opponent's marbles off the board (beyond the large circle) wins Atrio was designed by Christian Gibon (France) and first published in 1997 by LM Créations. Rules: http://maisonauteursdejeu.free.fr/Site.MAJ/LesJeux/ATRIO/Presentation.htm