Gomoku.app is an extended TicTacToe game for GNUstep. You win the game if you are able to put 5 of your pieces in a row, column, or diagonal. You lose if the computer does so before you. You can play the game on boards of different size. The game has 6 different difficulty levels.
TEG is clone of 'Plan Tactico y Estrategico de la Guerra', which is a clone of Risk, a networked multiplayer turn-based strategy game. TEG is not fully compliant with Risk; some rules are different. It has a server, a robot, a GNOME client, support for GGZ Gaming Zone, and IPv6.
Knights aims to be the ultimate chess resource on your computer. Written for the K Desktop Environment, it's designed to be both friendly to new chess players and functional for Grand Masters. It supports play against many opponents, including yourself, computer opponents, live Internet players, and against friends via email. It also sports highly customizable graphics and sound.
Custom Strategy Role Playing Game is an engine for creating strategy role-playing games. Two players confront two parties of characters (which have RPG attributes: job, level, exp, skills, etc.) over a battlefield, and the surviving party wins. Jobs, skills, etc. are stored in XML custom files. It has a combat style similar to Final Fantasy Tactics and Shining Force.
Card Monsters lets you play a creatures, instants, and sorceries. You to play the game against a computer-controlled opponent. Currently there are over 300 cards, and you can play in constructed, sealed, and draft mode. The program can automatically download all of the card pictures. The GUI is basic but very usable.