"Otrio" The game of critical thinking and visual perception, was made by Marbles: Brain Workshop, Chicago, IL. The game comes complete with 1 eco-friendly, carbonized bamboo board, 36 plastic playing pieces in four unique colors and 1 sheet of step-by-step instructions. All pieces are in very good, lightly if ever used condition and come in the original box which shows a little shelf and edge wear.

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