Warship Battle is based on the old game of battleship, but with customization features. You can change the field size and the number of boats. Boats can be put one by one on the field or generated. Choose to strike in turn or until you miss. Three levels of difficulty are available. Preferences are remembered between sessions.
XBattleAI is an enhanced version of the Unix strategy game XBattle. XBattleAI is an elegant and abstract realtime strategy game for multiple players or a single player. It is based on the last stable version of XBattle (5.4.1), and adds the option of using computer-controlled opponents, campaigns, some bugfixes, and some miscellaneous extra features.
XPilot is a graphical multi-player maneuvering game with less-exciting graphics, but more speed, tactics, and insults. Some people also use it for UDP network analysis. Over the past eight years of playing and development, tons of features have been added to the game, from basic weapons like shotguns and missiles to more recent ones like phasing devices, invisibility, or hyperjump.
Plasma EBG is an empire building game with an isometric view. It runs in multiple resolutions with graphics being displayed better for higher resolutions; hence, lower resolutions do not suffer from being too large, etc. In the future several viewing engines will be available, such as EBG-opengl and EBG-2d. There is a separate module called EBG-dev which features the latest AI-development, as well as a separate server module.
Xtank is a fairly old but reliable graphical game requiring multiple players and optimised for a local area network of X displays. It features fast update rates, assorted mazes, various vehicles, simple graphics, drone tanks, and team play. Different game styles are possible; straight combat, territorial expansion, maze races with and without weapons, and ultimate frisbee. The "north" development branch is James Cameron's modifications to the 1.3f version for use on 800x600 displays in a network of Linux based second-hand gaming workstations in a rural village.
Wars of Destiny is a real-time strategy game. It is currently in a major building stage, but looks very promising. If you are interested in helping, then your assistance would be greatly appreciated. It uses SDL 1.2.0 and SDL_mixer, and it includes fully integrated network support for playing with other people over the Internet. It also includes a map creator and an easy-to-use interface for configuring WOD.