Open Source RTS Games

0 A.D. is a free, open-source, cross-platform real-time strategy (RTS) game of ancient warfare. In short, it is a historically-based war/economy game that allows players to relive or rewrite the history of Western civilizations, focusing on the years between 500 B.C. and 500 A.D.

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.

OpenDungeons is an open source, real time strategy game sharing game elements with the Dungeon Keeper series and Evil Genius. Players build an underground dungeon which is inhabited by creatures. Players fight each other for control of the underground by indirectly commanding...

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

Dune Legacy is an effort by a handful of developers to revitalize the first-ever real-time strategy game. Based from Dune II

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.

MegaGlest is an open source 3D-real-time strategy game, where you control the armies of one of seven different factions: Tech, Magic, Egyptians, Indians, Norsemen Persian or Romans. The game is setup in one of 14 naturally looking settings, which -like the unit models- are...

Unknown Horizons is a 2D real-time 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.

Tremulous is a free, open source game that blends a team based FPS with elements of an RTS. Players can choose from 2 unique races, aliens and humans. Players on both teams are able to build working structures in-game like an RTS.

An Open Source Pixelart Science-Fiction Real-Time Strategy game with multiplayer, AI bots as well as an integrated map editor.

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

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...

Unvanquished is a free, open-source first-person shooter combining real-time strategy elements with a futuristic, sci-fi setting. It is available for Windows, Linux, and Mac OS X.

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.

An open source re-implementation of Caesar III. Contribute to Keriew/augustus development by creating an account on GitHub.

A better fork of OpenDungeons with enhanced editor and tile — geometry distortions.

Kung Fu Chess is a real-time chess game where players don't take turns. A player may make a move at any time, but pieces have a travel speed and a cooldown period.

Bos Wars (formerly known as Battle of Survival) is a futuristic real time strategy game (RTS). It is possible to play against human opponents over LAN, internet, or against the computer.

In Real-time Chess (or Kung-Fu Chess, Ninja Chess), all pieces can be moved simultaneously, but there is a short cool-down afterwards. This is a very fun multi-player game, completely different from regular chess!

Ant Media Server is a streaming engine software that provides adaptive, ultra-low latency streaming by using WebRTC technology with 0.5 seconds latency. Ant Media Server is highly scalable both horizontally and vertically.

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.