Simon Tatham's Puzzles

Simon Tatham’s Portable Puzzle Collection is a set of small logic games that have run on Unix and Windows for about twenty years. This is the Android version by Chris Boyle, who says: “when I got the first Android phone in 2008, I ported it to Android so I could keep playing.” His description: “a collection of 40 single-player logic games. It’s free, with no ads, and is playable offline.” Simon Tatham’s own site lists it among the third-party ports of his collection.

Every game generates a fresh puzzle on demand, in the size and difficulty you choose, so you never run out.

The 40 puzzles

Black Box, Bridges, Cube, Dominosa, Fifteen, Filling, Flip, Flood, Galaxies, Guess, Inertia, Keen, Light Up, Loopy, Magnets, Map, Mines, Mosaic, Net, Netslide, Palisade, Pattern, Pearl, Pegs, Range, Rectangles, Same Game, Signpost, Singles, Sixteen, Slant, Solo, Tents, Towers, Tracks, Twiddle, Undead, Unequal, Unruly and Untangle.

Several are better known under other names, as the built-in help explains: Solo is the puzzle newspapers call Sudoku, Keen appears in the Times as KenKen, Pattern is a nonogram, and Galaxies is Nikoli’s Tentai Show, often called Spiral Galaxies. Mines is the familiar minefield game, and Loopy, Bridges, Light Up, Slant and Filling are also credited to the Japanese puzzle publisher Nikoli. The Android version has the same set as the original collection; its developer lists new games or rule changes as things the port won’t do.

Playing on Android

• Touch and long press. The manual’s instructions refer to mouse clicks and keys: on Android, a touch is a left click and a long press a right click, and the letter keys appear as buttons at the bottom of the screen.
• Undo and redo are always there, and the game in progress is saved automatically. Load…, Save… and Share… handle saved games as files.
• Type › Custom… sets the grid size and difficulty for each game; Game ID… and Seed… replay or share a particular puzzle.
• Night mode can be on, off, follow the system’s dark theme, or switch on in low light using the phone’s light sensor.
• Settings add on-screen arrow keys, thicker lines, full screen, keeping the screen awake, and options for a mouse or stylus.
• Extra buttons: an “M” in Keen, Solo, Towers, Undead and Unequal that pencil-marks every possible number (and can be undone), shown by default, and an “H” in Bridges and Unequal for an undocumented “solve from here” action, which you can switch on in the settings.

What it connects to

Nothing. The app has no internet permission, and the help for every game is built in. A few things open other apps when you tap them: the links in the help, Share…, and Send feedback, which offers a review on Google Play or a bug report on GitHub. One message points to Google Play by itself: if a required file is missing it says “Try reinstalling from Google Play” and opens the store; with this copy, reinstall it from here instead, because the Play version is signed differently.

About this file

• This is F-Droid’s build of the release dated 12 September 2025, compiled from the source code and signed with F-Droid’s key. The number in the version name, 23762278, is the commit of Simon Tatham’s collection it includes, from 3 September 2025; later fixes to the original games aren’t in this build.
• The release notes for this version: “Fix glitch at bottom of game on devices without swipe navigation”. The test release before it brought compatibility updates for Android 16 and “many upstream improvements from Mar 2024 to Aug 2025”.
• Chris Boyle publishes the same version on Google Play and as an APK on his site, both with his own artwork. Neither is signed with F-Droid’s key, so neither can update F-Droid’s copy, or the other way round, without uninstalling first.
• The 10.6 MB file runs on ARM and x86, 32- and 64-bit, from Android 5.0. It asks for no permissions apart from one Android uses internally. Our scan found no trackers.
• The puzzles are under the MIT licence, copyright Simon Tatham and other contributors, Chris Boyle among them; the licence text is in the app’s help.

CPU types in this build: arm64-v8a (64-bit ARM, almost every phone since 2017); armeabi-v7a (32-bit ARM, older and budget phones); x86 (32-bit Intel, emulators); x86_64 (64-bit Intel, emulators and Chromebooks).

Versions currently kept in the F-Droid repository. We host and check only the newest one. Full changelog.