15 puzzle gamesIt's very simple and can be printed without any support. The full size, including the lid, is67x67x10 millimeters。

If you're not familiar with this game, the rules are very simple. You need to arrange all the buttons in order by sliding them and taking advantage of a free space.

There are two different button combinations here. One is for deep numbers, and the other is for numbers close to the surface

If you'd like, you can buy me a cup of coffee :)Thank you so much for your attention to my work)
https://www.buymeacoffee.com/warlogh