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The automation tower defense game

Open source 4X civilization-building game

Recreates the classic Command & Conquer titles with a Free/Libre engine.

Empires Ascendant is a free, open-source, historical Real Time Strategy (RTS) game by Wildfire Games.

Free, cross-platform economy strategy game. Control the fate of a small tribe that can grow into a big empire

Multiplayer RTS

Tactical scale World War 2 turn based strategy game, that puts the player in the role of an Axis or Allied army general.

An open source turn based strategy game.