The full catalog

Build visual machine-learning pipelines to understand your cat. A puzzle game about data flow and ML concepts.

A modern remake of the 1984 classic: program a cute robot with visual chips to navigate logic puzzles.

Pull off heists with a hacking deck: type commands at a tiny console to open doors and disable cameras on a timer.

Level up Python and JavaScript by solving puzzles, then read everyone else’s solutions to the same problem. Learn by comparing.

A real-time strategy game with no mouse control — every one of your spirits is commanded by the JavaScript you write.

Hand-draw silicon, metal and dopant to build working integrated circuits in this free Zachtronics chip-design puzzler.

Write a hardware-description language to build logic gates, then a CPU, from the NAND up — text only, no hand-holding.

A gentle programming-puzzle game about the joy of write, test, iterate — guiding a little bot through tasks with your code.

A narrative game about a burnt-out developer where you fix real, broken code to repair the world around you.