Really enjoyed playing with your puzzle box! Had a few minor issues with the individual puzzles. Fitting the shapes puzzle seemed to have trouble recognizing when parts were taken out to replace and I felt it was a bit hard to tell where exactly the parts were going to end up according to my cursor. Cat puzzle had a lot of tiny pieces which made it very hard to finish it within the time limit but sometimes it gave me 2 rounds of time to do for some reason. Maze lacked a little feedback for when the puzzle was complete and I kept getting the ball stuck on the side walls.
Other than those issues though very fun, slightly stressful puzzle game! I thoroughly enjoyed playing it, well done!