My 12 year old encountered Turing Tumble in school and loved it so much she spent all her savings to buy it. Feel a little bad bes if I had known what it was I would have bought it, but wow we both love this game.
There's something alarming, though, about the rarity of entertainments of this sort. Mathematics abounds in deep, beautiful patterns that might inspire a vast variety of similar toys and games. But those who know these patterns best seldom try to make toys and games from them.