Free & Open Source RTS Games
129 free, open-source rts games — real clones and remakes you can download, inspect the source of, and modify. Not just free to play: the code itself is open.
Halted
Original game image
Original game imageClone of Revenge of the Titans
Puppy Games' official Revenge of the Titans source release, source code only — no game assets included.
Platforms:None
Stars47
Updated14 years ago
LicenseUnknown
Release2011
Genre: tower defense
Theme: —
Active
Clone of Tribal Trouble
A free, actively developed community revival of Tribal Trouble with 12-player online play, remastered graphics, and new features.
Platforms:WindowsLinuxOSX
Stars45
Updated1 month ago
LicenseGPL-2.0
Release2025
Genre: Real-Time Strategy
Theme: —
Halted
Halted
Original game image
Original game imageClone of Carrier Command
An open-source futuristic flight-sim/action game inspired by the 1988 vehicle-sim classic Carrier Command.
Platforms:OSX
Stars33
Updated2 years ago
LicenseUnknown
Release2010
Genre: Real-Time Strategy
Theme: Sci-Fi
Halted
Original game image
Original game imageClone of Beasts and Bumpkins
A fan-made patch for Beasts and Bumpkins (1997) that removes the CD requirement, fixes lag on modern hardware, and adds higher resolution.
Platforms:Windows
Stars29
Updated3 years ago
LicenseGPL-3.0
Release2023
Genre: Real-Time Strategy
Theme: Comedy
Halted
Original game image
Original game imageClone of StarCraft
Magnetar is a StarCraft mod that loads the original StarCraft.exe into memory and combines it with its own additions.
Platforms:Windows
Stars28
Updated2 years ago
LicenseMIT
Release2016
Genre: Real-Time Strategy
Theme: Sci-Fi
Active
Original game image
Original game imageClone of Blood & Magic
This repository preserves the official 1996 interactive preview demo of Blood & Magic, including a tutorial and two scenarios.
Platforms:WindowsDOS
Stars25
Updated2 months ago
LicenseUnknown
Release2016
Genre: Real-Time Strategy
Theme: Fantasy
Halted
Clone of Command & Conquer: Red Alert
A partially complete C++/SDL rebuild of the Red Alert 1 engine, based on FreeCNC and FreeRA, that needs the original data files.
Platforms:WindowsLinux
Stars25
Updated11 years ago
LicenseGPL-2.0
Release2015
Genre: Real-Time Strategy
Theme: Modern Military
Active
Original game image
Original game imageClone of Enemy Nations
A source-code revival and SDL2 port of Enemy Nations to modern Windows, Linux, and macOS, with restored music and TCP/UDP multiplayer.
Platforms:Windows
Stars22
Updated1 month ago
LicenseUnknown
Release2022
Genre: Real-Time Strategy
Theme: —
Sporadic
Original game image
Original game imageClone of Warrior Kings
A from-scratch, multiplayer-capable rewrite of the wkbre Warrior Kings engine reimplementation, still in early development.
Platforms:WindowsLinux
Stars22
Updated7 months ago
LicenseGPL-3.0
Release2019
Genre: Real-Time Strategy
Theme: —
Sporadic
Clone of Beasts and Bumpkins
A small collection of utilities for Beasts and Bumpkins, including a MAPViewer and SpriteViewer plus documentation of its file format.
Platforms:Windows
Stars21
Updated1 year ago
LicenseGPL-3.0
Release2017
Genre: Real-Time Strategy
Theme: Comedy
Active
Clone of Pikmin 2
A work-in-progress decompilation of New Play Control!
Stars21
Updated1 month ago
LicenseUnlicense
Release2024
Genre: Real-Time Strategy
Theme: Fantasy
Halted
Original game image
Original game imageClone of Seven Kingdoms II: The Fryhtan Wars
An experimental fork of the 7kfans GPL release of Seven Kingdoms II replacing DirectX/DirectPlay/DirectSound with SDL2, ENet, and OpenAL.
Platforms:Linux
Stars20
Updated10 years ago
LicenseUnknown
Release2012
Genre: Real-Time Strategy
Theme: Fantasy
Halted
Clone of Warrior Kings
An engine reimplementation of Warrior Kings (Battles) for editing and building custom maps; gameplay is still in development.
Platforms:Windows
Stars20
Updated2 years ago
LicenseGPL-3.0
Release2016
Genre: Real-Time Strategy
Theme: —
Halted
Original game image
Original game imagePlatforms:Windows
Stars17
Updated3 years ago
LicenseMIT
Release2018
Genre: Real-Time Strategy
Theme: Sci-Fi
Active
Clone of Homeworld
Gardens of Kadesh is a fan-maintained continuation of Homeworld SDL, an earlier community port of Homeworld's 1999 source code.
Platforms:WebWindowsLinux
Stars17
Updated1 month ago
Licenseother
Release2019
Genre: Real-Time Strategy
Theme: Sci-Fi
Archived
Original game image
Original game imageClone of Allegiance
Microsoft's official, unsupported source-code release for Allegiance, published as-is after the game's own servers had already shut down.
Halted
Original game image
Original game imageClone of Stronghold
Castlekeep is a reimplementation of Stronghold 1; the project is unplayable and development has halted.
Platforms:None
Stars16
Updated7 years ago
LicenseGPL-3.0
Release2019
Genre: Real-Time Strategy
Theme: Medieval
Active
Original game image
Original game imageClone of Outpost 2
A work-in-progress Outpost 2 mod for the OpenRA engine that needs the GOG release of the original.
Platforms:WindowsLinuxOSX
Stars16
Updated4 months ago
LicenseGPL-3.0
Release2020
Genre: Real-Time Strategy
Theme: Sci-Fi
Halted
Original game image
Original game imageClone of Beasts and Bumpkins
Open source encoder/decoder tools for EA's MicroTalk speech codec, used in games like SimCity 4 and The Sims Online.
Platforms:None
Stars15
Updated8 years ago
LicenseUnlicense
Release2015
Genre: Real-Time Strategy
Theme: Comedy
Halted
Clone of Warcraft 2000
Official released source code for Warcraft 2000: Nuclear Epidemic, GSC Game World's 1998 RTS built to rival Warcraft II and StarCraft.
Platforms:Windows
Stars14
Updated3 years ago
LicenseUnknown
Release2023
Genre: Real-Time Strategy
Theme: Fantasy
Halted
Original game image
Original game imageClone of Polanie
Unmodified 1996 source code for the Polish RTS game Polanie, untested and unlikely to compile as-is.
Platforms:WindowsDOS
Stars14
Updated6 years ago
LicenseUnknown
Release2019
Genre: Real-Time Strategy
Theme: Fantasy
Active
Original game image
Original game imageClone of Pikmin
A work-in-progress decompilation of the 2009 Wii release New Play Control! Pikmin; requires your own game copy.
Halted
Clone of The Settlers III
X-Settlers is an early, currently unplayable C++17 rewrite of The Settlers III/IV aiming for cross-platform support.
Platforms:WindowsLinux
Stars11
Updated6 years ago
LicenseApache-2.0
Release2020
Genre: Real-Time Strategy
Theme: Ancient History
Halted
Clone of Command & Conquer
FreeCNC is a GPLv2 engine reimplementation of Command & Conquer: Tiberian Dawn, requiring the original game's data files.
Platforms:WindowsLinux
Stars8
Updated12 years ago
LicenseUnknown
Release2014
Genre: Real-Time Strategy
Theme: Modern Military
Sporadic
Sporadic
Original game image
Original game imageStars5
Updated4 months ago
LicenseUnknown
Release2026
Genre: Real-Time Strategy
Theme: —
Active
Original game image
Original game imageClone of Team Buddies
A matching decompilation of Team Buddies (SLUS-008.69) that builds without a private disc dump.
Stars5
Updated1 month ago
LicenseMIT
Release2026
Genre: Real-Time Strategy
Theme: —
Halted
Clone of Stronghold
A work-in-progress decompilation of the 1993 AD&D Stronghold for DOS, aiming for code that compiles with Borland C++ 3.0.
Stars4
Updated2 years ago
LicenseCC0-1.0
Release2024
Genre: Real-Time Strategy
Theme: Medieval
Halted
Clone of Savage: The Battle for Newerth
The official archived source code release of Savage: The Battle for Newerth, preserved via the Internet Archive.
Active
Clone of Team Buddies
A static recompilation kit for Team Buddies (Europe): you supply the disc image and BIOS, and setup builds it locally.
Stars1
Updated1 month ago
LicenseGPL-3.0
Release2026
Genre: Real-Time Strategy
Theme: —
Halted
Clone of Earth 2140
An early, not-yet-playable C++ reimplementation of the 1997 RTS Earth 2140 that uses the original game files.
Platforms:LinuxOSX
Stars1
Updated3 years ago
Licensegpl-3.0+
Release2020
Genre: Real-Time Strategy
Theme: Sci-Fi
Active
Clone of Natural Selection
Original game image
Original game image