This is an implementation of Donald Knuth's Algorithm X ('dancing links'). This is primarily a sudoku generator and solver, though it can be used to solve other exact cover problems. Platforms: Windows, Mac, Linux

Jotto is a word puzzle game, where each player tries to guess an opponent's secret word. You can play against the computer or against another player over the network. Platforms: Windows, Mac, Linux

Java implementation of the simple yet addictive award-winning game of Mosser, created by kuni. Platforms: Windows, Mac, Linux

This is a small game where you have to find your way out of a labyrinth. Collect as much money as possible and find the secret! Then you can search for the finish. Beat your best friend on three maps bigger than 1,587,500 px! Have a lot of fun! Platforms: Windows, Mac, Linux

Mazix is a 3D Java game project which consist of a maze with lots of different objects the player can interact before finding the end of the maze, such as Teleports, Doors, Keys, Balls, Walls... The game could be compared to Oxyd or Sokoban. Platforms: Windows, Mac, Linux

A hybrid of 'Lights Out' and 'Destructo Match'(from Neopets). This is a the Manta project from the YPP Grand Crafting Puzzle Project. See http://forums.puzzlepirates.com/community/mvnforum/listthreads?forum=35 for more details on the GCPP. Platforms: Windows, Mac, Linux

Arc Consistency Crossword Compiler (arccc) uses constraint satisfaction algorithms to fill crossword grids given a wordlist. The current implementation can fill simple grids in less than a minute. A word list gleaned from a variety of sources is includ Platforms: Windows, Mac, Linux

A word search maker for teachers, parents and those who enjoy creating puzzles. FindThatWord aims to be the best free wordsearch creation program available with useful features such as clues, hidden messages and automated page layout. Platforms: Windows, Mac, Linux

Wholesale Hero is a manufacturing and shipping game that puts you at the head of a veritable economic empire, bringing products like Mime Oil, Skub and Product to the masses! Do you enjoy matching? The Manufacturing phase lets you match items on an ever-speedier assembly line, battling not only... Platforms: Mac OS X 10.4 or later

phpSudoku is a small and fast script for a sudoku online-game on your website. It includes 200000 sudoku puzzles and ist very easy to integrate in every website and your existing webdesign. It requires PHP 4 or higher. There is no need of MySQL. Platforms: Windows, Mac, Linux

Crossword Sage is a tool for creating professional looking crosswords with powerful word suggestion capabilities. It can also help you solve crosswords! Platforms: Windows, Mac, Linux

A sweet little game. It s a version of Lines with alien technology added. Platforms: Mac OS X 10.1 or later

Kambi VRML game engine is a free/open-source 3D (game) engine. The engine is written in clean Object Pascal code, and we have an excellent support for the VRML / X3D 3D data (although other 3D model formats are also supported). See here for detailed documentation and downloads for developers. Platforms: Mac, Mac OSX

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A dutch 'Wheel of Fortune'-based word puzzle game: Rad van Fortuin Platforms: Windows, Mac, Linux

Python Sudoku solver - finds all solutions for a given Sudoku board. Platforms: Windows, Mac, Linux

Tux Math Scrabble encourages kids to construct compound equations and consider multiple abstract possibilities. The latest version (0.7.3) is always available at the official homepage: http://www.asymptopia.org/index.php?topic=TuxMathScrabble Platforms: Windows, Mac, Linux

Atani Software has a primary focus of developing games for various platforms and also try to keep the good old BBS' alive with releases of door games, etc. Platforms: Windows, BSD, Mac, Linux

This software is directed to children and school teachers for teaching ortography rules of the English language. Platforms: Windows, Mac, Linux

4digits is a guess-the-number puzzle game. It's also called Bulls and Cows, and in China people simply call it Guess-the-Number. The game's objective is to guess a four-digit number in 8 times. Platforms: Windows, Mac, Linux

This game demo is a tool to learn the basics of J2ME and a few graphic tricks. It uses an Ant script for both code related operations and distribution management. It also makes good use of great Java tools (Antic, ProGuard, MPowerPlayer). Platforms: Windows, Mac, Linux