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A quick and light single player Action RTS.

sci-fi dynamic RTS

A RTS survival game about surviving on a floating island.

A remake of Warcraft: Orcs & Humans

A base building game focused on economy and defence.

The automation tower defense game

Multiplayer RTS

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

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

Evolution RTS is a free an Open Source RTS game designed using the Spring Engine.