| Manufacturer | Marbles Brain Workshop |
Otrio turns a child's game of tic-tac-toe into a full fledge strategy battle. To claim victory and win, get three pieces of your color in a row based upon similar size; lined up in ascending or descending order; or within the same space as three concentric pieces.
Ages 6+
2-4 players
Count: 36 pieces + board + instruction sheet