Advanced Strategic Command
A turn based strategy game for Linux or Windows. (Open Source)

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Attal: Lords of Doom
Turn-based strategy game for Linux in which you control bases and manage fighting lords.

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Boa game
A multi-player clone of the worm(6). Includes, server, client, and bot. Source can be compiled for SGI, Linux, Sun or Gnuwin32.

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Boson
Boson is an OpenGL real-time strategy game, with the feeling of Command&Conquer(tm) or StarCraft(tm).

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C-evo
C-evo is a free strategy game dealing with the history of man from the antiquity until the future.

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Castle Combat
A clone of Rampart for Linux. Two players build castle walls, place cannons inside these walls, and shoot at the walls of their enemies.

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CivQuest
Turn-based Civilization clone written in Java. (Open Source, GNU GPL)

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Constellation!
Constellation is a 2D turn-based pure-multiplayer strategy / combat game for Windows with a space theme. Well suited to be played by email.

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Crimson Fields
Describes tactical war game for Linux or FreeBSD in the tradition of Battle Isle. Two players command their units on a map of hexagons, trying to defend important locations to destroy all enemy forces. (Open Source)

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Cult
Using negotiation and trade, one must resolve a situation involving cultists barricaded in a villa two kilometers away from town. As you play, you wander around the villa, meeting some of the brainwashed cult members (and some reasonable people).

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