Join "The Project" to restore humanity's synaptic-link technology after nuclear war has devastated Earth, rendering it a Warzone 2100.


The best open source alternative to Dune Legacy is Warzone 2100. If that doesn't suit you, our users have ranked more than 25 alternatives to Dune Legacy and 12 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Dune Legacy are OpenRA, Widelands, CaesarIA and Beyond All Reason.
Join "The Project" to restore humanity's synaptic-link technology after nuclear war has devastated Earth, rendering it a Warzone 2100.


OpenRA is an open-source reimplementation of Westwood’s Command & Conquer Red Alert game engine, updated to use the hardware acceleration of modern video cards using OpenGL.




Widelands is a free, open source real-time strategy game with singleplayer campaigns and a multiplayer mode. The game was inspired by Settlers II™ (© Bluebyte) but has significantly more variety and depth to it. Still, it is easy to get started through playable tutorials.

CaesarIA is an open source remake of Caesar III game released by Impressions Games in 1998, it aims to expand the possibilities of the classical city-building simulators and to add new features showing the city life. Now the game work with Windows, Linux, Mac, Haiku and Android.




The Total Annihilation Inspired RTS you've been waiting for is coming.




Free (as in freedom) open-source RTS Age of Empires engine. Written from scratch in C++, Python, Cython, Qt/QML, OpenGL/GLSL, Vulkan, ...


Do you want epic battles?
Do you want breathtakingly gigantic scenes of glorious destruction and heart-pounding action?
The graphics on this game are amazing, especially given the infinite scalability.
Giant battles? Why, Yes! Why fight a war with subtlety when you can send.



Spring:1944 is a WWII themed game based on the open source Spring Engine. Our goal is to create four fully functional sides (US, Germany, USSR, Britain) with period-accurate units and strengths. Realism is a primary design goal, second only to creating a game that is fun and...

Globulation 2 is an innovative Real-Time Strategy (RTS) game which reduces micro-management by automatically assigning tasks to units.



Evolution RTS is a free an Open Source RTS game designed using the Spring Engine. It is continually developed and receives updates often.




Annex: Conquer the World is a indie real time strategy game. Play as one of four factions, over 30 tech trees, original maps, and tileset.



