Thanks a lot for all the effort on playing my game. I'm really glad you and your grown kid liked the game.
Also thank you for the feedback. I really think the last puzzle needed a few more iterations to get right. The switch in the forwardground isn't that easy to spot at first glance. Another issue in this puzzle is that the player loses sight of the gate to continue while pressing the switches so it's possible to solve it and not realize the puzzle is solved. And one of my friends noticed it was possible to jump over the gates in the maze. Well, lessons learned.