TIS-100
Write assembly for a broken computer made of tiny parallel nodes
You repair corrupted code on a strange old computer made of small connected nodes. Each node runs a few lines of assembly and passes values to its neighbors. You solve more than 20 puzzles and try to lower your cycle, instruction and node counts against friends and other players. Three sandboxes let you build your own challenges, including a visual console for small games.
Paid · No login · Desktop · Advanced
About TIS-100
It trains low-level thinking under tight limits, with work split across parallel nodes. You learn the machine from a printable manual styled like a vintage computer manual. It suits programmers who enjoy hard, open-ended puzzles.
It is a paid game from Zachtronics, released in 2015 for Windows, macOS and Linux. It is sold on Steam, GOG and itch.io, and there is an iOS version.
On Breakpoint since 23 Oct 2026.