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0 A. D. is a free, open-source, historical Real Time Strategy (RTS) game currently under development by Wildfire Games, a global group of volunteer game developers. Download 0 A. D.
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Freeciv is an open-source, turn-based strategy game based on Civilization II.
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Join "The Project" to restore humanity's synaptic-link technology after nuclear war...
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Open source Elderscrolls 3: Morrowind engine re-implementation.
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Game engine recreation of RollerCoaster Tycoon 2 adding new features.
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What if Albert Einstein changed history? What if the Andromeda Strain were a miracle mineral?
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Spring is a versatile 3D RTS game engine.
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Widelands is a free, open source real-time strategy game with singleplayer campaigns and a...
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VCMI is an open-source engine for Heroes of Might and Magic III.
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Spring:1944 is a WWII themed game based on the open source Spring Engine.
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webDiplomacy is an online, multiplayer, turn-based strategy game that lets you play Diplomacy online.
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A 2D realtime strategy simulation with an emphasis on economy and city building. Expand your small settlement to a strong and wealthy colony, collect taxes and supply your inhabitants with valuable goods.
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Grow in power by conquering castles. Gain vassals until you can overthrow your lord and climb the tree to become the Dominus.
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FIFE engine - open-source multi-platform isometric game engine.
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Discover a space strategy game filled with conquest, betrayal and subterfuge.
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3d city builder game.
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Beyond All Reason (BAR) is the ultimate Realtime Strategy Game (RTS). Everything is physically simulated, with over 400 unique units, with true radar and sight where terrain really matters. BAR offers countless possible strategies.
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Cytopia, the free opensource citybuilding game.