Thinkfun Gravity Maze

What you get: Gravity Maze is a combination logic game, marble run and STEM toy that's one of the best gifts you can buy for boys and girls age 8 and up. It contains 60x challenges from beginner to expert, a game grid, 9x towers, 1x target piece, and 3x marbles. An ideal Travel game and kids toy
Develops critical skills: Playing your way through the challenges builds spatial reasoning and planning skills and is partly an engineering and building toy that provides a great stealth learning experience for young players
Comes with multi-level challenges: Gravity Maze comes with 60 beginner to expert challenges that become increasingly difficult as you play through them