SmartGames IQ XOXO

Noughts and crosses, if noughts and crosses were actually hard.

Ten double-sided pentomino pieces, one grid, and a requirement that the X's and O's end up in the right sequence. Flip a piece over and it becomes a different shape entirely, which is where most people come unstuck.

120 challenges over five levels. It's a travel-sized box that works on a plane tray table, and it quietly drills spatial reasoning and concentration while feeling like a puzzle rather than a lesson.

Perfect for: solo puzzlers, long flights, and adults who assumed a children's puzzle would take ten minutes.