Domino Tower puzzle by Oskar van Deventer (posted with permission).
Oskar has a very interesting Youtube channel where he shares his latest designs. He also uploads some of them to his webpage, where you can find many STL models. If you like this puzzle, please, support his products and his channel, so he can keep designing great puzzles!

I provide an easy-to-print version of this puzzle made of individual dominoes that can be connected with the aid of tiny alignment holes. This version lets you print this model in contrasting colors with any 3D printer.
The alignment holes have a diameter of 2 mm and a depth of 5 mm, and are specially well suited to be used with standard 1.75 mm filament. Depending on the tolerances of your machine and your filament, you may not even need to use glue to keep the pieces in place!

The whole puzzle is composed by four equal stair-like pieces made of 6 dominoes.
Once assembled, they fit tightly into a 6x6x6 cm box (each domino is 1x2x4 cm).
If you want to adjust the size of the pieces, the diameter of the holes, or the chamfer radius, please, use the OpenScad script provided.
The modular design of these pieces is also an invitation to make variants of this puzzle by changing the color scheme, number of layers, chirality of the pieces, etc.
Please, share your makes with the community so we could all get some inspiration!
The author marked this model as their own original creation.