Simon Tatham's Puzzles
Forty-plus hand-implemented logic puzzles — Sudoku, Minesweeper, Sokoban, and dozens more. Clean, offline-capable, no ads.
Tune in
Play Simon Tatham's Puzzles →Opens in a new tab on the original host.
Controls: Mouse-driven. Each puzzle has its own controls listed in the Help menu.
Simon Tatham is best known for PuTTY, the SSH client that lives on every Windows machine that has ever talked to a server. He is less well known for an obsessive project to implement, from scratch, every interesting single-player logic puzzle he had ever encountered and compile them into a single portable collection.
The result is forty-plus puzzles: the usual suspects (Minesweeper, Sudoku, Sokoban) alongside obscure gems (Loopy, Signpost, Galaxies, Undead). Every puzzle generates new random instances on demand. Every puzzle has a built-in hint system. The entire collection runs in the browser via JavaScript-compiled-from-C — the same source code that powers the Windows, Mac, Linux, and Android apps, run through Emscripten.
No accounts. No tracking. No ads. The page loads instantly and everything after that is local computation. The collection has been maintained continuously for over twenty years.
If you have fifteen minutes and want something to do with your hands while you think, Tatham’s Puzzles is the most reliable answer on the internet.
Why it’s on the guide: MIT license, two decades of continuous maintenance, and the kind of quiet excellence that only happens when someone builds something purely because they want it to exist.