Topic: Simon Tatham's Puzzles is a set of single-player open-source logic puzzle games

[Software Santa]

Simon Tatham's Puzzles is a set of single-player open-source ad free logic puzzle games
for Windows or UNIX or Mac OS X - Or can be played over the Internet!

Versions for Various Mobile devices can be found HERE: Simon Tatham's Puzzles for Mobile Devices.
Ubuntu Version: https://github.com/bluesabre/sgt-launcher

Simon Tatham's Portable Puzzle Collection
Introduction

This page contains a collection of small computer programs which implement one-player puzzle games. All of them run natively on Unix (GTK), on Windows, and on Mac OS X. They can also be played on the web, as Java or Javascript applets.

I wrote this collection because I thought there should be more small desktop toys available: little games you can pop up in a window and play for two or three minutes while you take a break from whatever else you were doing. And I was also annoyed that every time I found a good game on (say) Unix, it wasn't available the next time I was sitting at a Windows machine, or vice versa; so I arranged that everything in my personal puzzle collection will happily run on both those platforms and more. When I find (or perhaps invent) further puzzle games that I like, they'll be added to this collection and will immediately be available on both platforms. And if anyone feels like writing any other front ends for platforms I don't support (which people already have) then all the games in this framework will immediately become available on another platform as well.

The games
The actual games in this collection were mostly not my invention; they are re-implementations of existing game concepts within my portable puzzle framework. I do not claim credit, in general, for inventing the rules of any of these puzzles. (I don't even claim authorship of all the code; some of the puzzles below have been submitted by other authors.)

Below each image are two links to versions of the puzzle you can play on the web. The 'java' link goes to a Java applet, which you can play in your browser if you have a working Java plugin. There's also a link marked 'js', which links to an alternative web version written in Javascript using asm.js; those versions are new as of March 2013 and have been somewhat tested in Firefox 19, Chrome 26, Internet Explorer 10 and Safari 6.

Also below each image is a link to the Windows binary for the game, and a link to the manual. For all other platforms, the games are provided in a single bundle, so scroll down to the Download section to get them all.

Contains the following 39 games:
Black Box, Bridges, Cube, Dominosa, Fifteen, Filling, Flip, Flood, Galaxies, Guess, Inertia, Keen, Light Up, Loopy, Magnets, Map, Mines (Minesweeper), Net, Netslide, Palisade, Pattern, Pearl, Pegs (Solitaire), Range, Rectangles, Same Game, Signpost, Singles, Sixteen, Slant, Solo (Sudoku), Tents, Towers, Tracks, Twiddle, Undead, Unequal, Unruly, Untangle

https://www.chiark.greenend.org.uk/~sgtatham/puzzles/

https://github.com/bluesabre/sgt-launcher

https://launchpad.net/sgt-launcher