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Forty logic puzzles on one page, each generated fresh and each solvable by pure reasoning. The interface is ancient and it does not matter.
Opens in a new tab. We do not control this site and it may have changed since we catalogued it.
Simon Tatham's Puzzle Collection sits in Grid & Tile Puzzles under Play, filed as rabbit hole.
About this category: Falling blocks, sliding tiles, merge mechanics and the whole lineage descending from a Soviet mainframe in 1984. Endlessly refined, never improved on.
Yes. Simon Tatham's Puzzle Collection is free to use and needs no account.
No. You can use Simon Tatham's Puzzle Collection without signing up for anything.
Yes. Simon Tatham's Puzzle Collection works on phones as well as desktop browsers.
Yes, we file it as safe for work. It also works muted.
We file it as "Rabbit hole": Clear your evening. We warned you.
Push crates into place in rooms built to punish the obvious first move, with thousands of community-made levels behind them.
Clean daily sudoku across five difficulties, with a notes mode that behaves the way a pencil is supposed to.
Drop fruit into a box, merge matching pairs and watch the pile creep towards the line. Physics does the rest of the work.
Competitive multiplayer stacking with modern rules and opponents who will finesse you into the floor within ninety seconds.
Enter any two articles and get every shortest path of links between them, drawn as a graph you can drag.
The world's largest supplier of real and replica skulls, browsable by species, which is educational and mildly alarming in equal parts.
News for nerds since 1997, with tech headlines and threaded comments kept in order by a reader moderation system older than most social networks.
The original rumour desk, still patiently establishing whether the thing your uncle forwarded actually happened.
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