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Win all 21 marbles in a game of number pairs and logic. Kids will quickly get used to associating 6 with 4, 7 with 3, 8 with 2 and 9 with 1 without mixing them up. No sugar, no unhealthy additives, no ads or infinite levels... just 21 marbles that keep breaking.
Recommended age: 5+; also fun for adults who like Sudoku.
Recommended age: 5-9, especially kids in the process of learning the multiplication table.