jIsoEngine is an isometric 2D engine for Java applications. It provides an SDK of methods and classes that let developers easily build a complete game. It is suited for simulation games, board games, and turn-based games. The project is bundled with Tourist Camping Tycoon, a game developed with the engine.
Freeciv is a multiuser reimplementation for Unix/X of the famous Microprose game of Civilization. By default, the game is an improved Civ II, but this can be customized; modpacks for near-100% compatibility with Civ I and Civ II are included. Multiuser gameplay is real-time: in each turn, all human players move concurrently. The game is designed to remain fairly playable even on poor network connections. Freeciv can also be played on standalone machines, and its AI players are a good challenge for beginners. The source code comes with the server, two X clients, and non-X clients for MS Windows and Amiga. Freeciv is released under the GNU General Public License. It is maintained by an international team of coders and enthusiasts, and is easily one of the most fun and addictive network games out there.
This project is a collection of robots for the robocode framework. Robocode is an alphaworks project from IBM that provides an environment for creating software robots that compete against each other. This collection provides examples for people who wish to write their own robots.