Free & Open Source Strategy Games
341 free, open-source strategy games — real clones and remakes you can download, inspect the source of, and modify. Not just free to play: the code itself is open.
Active
Halted
Clone of Blitzkrieg
The official 2025 release of Blitzkrieg's singleplayer source code by Nival, under a non-commercial license, needing third-party SDKs.
Platforms:Windows
Stars325
Updated1 year ago
LicenseUnknown
Release2025
Genre: Real-Time Tactics
Theme: World War II
Active
Clone of Imperium Galactica
A Java reimplementation of the 4X space strategy game Imperium Galactica, bundling its data with Digital Reality's permission.
Halted
Clone of Dwarf Fortress
A Unity tutorial project and base-building game skeleton inspired by Dwarf Fortress and RimWorld.
Active
Clone of Cortex Command
CCCP is a community-driven continuation of Cortex Command's development, free and open source under AGPLv3, with an active mod portal.
Platforms:WindowsLinuxOSX
Stars322
Updated1 month ago
LicenseAGPL-3.0
Release2024
Genre: Action
Theme: Sci-Fi
Sporadic
Clone of Blitzkrieg 2
Nival's official 2025 source release of Blitzkrieg 2's C++ engine and assets, under a non-commercial community license.
Platforms:Windows
Stars311
Updated1 year ago
LicenseUnknown
Release2025
Genre: Real-Time Tactics
Theme: World War II
Active
Halted
Active
Clone of Advance Wars
A from-scratch Advance Wars clone built in C++ with the oxygine engine and Qt, supporting community mods.
Platforms:Linux
Stars295
Updated11 days ago
LicenseLGPL-3.0
Release2019
Genre: Turn-Based Strategy
Theme: —
Halted
Clone of Stronghold
An open-source engine reimplementation of Stronghold; development is frozen pending Firefly's Definitive Edition release.
Platforms:WindowsLinuxOSX
Stars281
Updated2 years ago
LicenseMIT
Release2019
Genre: Real-Time Strategy
Theme: Medieval
Halted
Active
Clone of Civilization II
A turn-based 4X empire-building strategy game built on Freeciv with Qt, supporting hex and square maps and 500+ nations.
Platforms:WindowsLinuxOSX
Stars267
Updated13 days ago
LicenseGPL-3.0
Release2020
Genre: Turn-Based Strategy
Theme: —
Halted
Active
Active
Clone of RollerCoaster Tycoon
A C++17 recreation aiming to capture the look, feel, and gameplay of RollerCoaster Tycoon 1 and 2, semi-playable in-browser via WebAssembly.
Platforms:WebWindowsLinux
Stars255
Updated13 days ago
LicenseUnknown
Release2015
Genre: Simulation
Theme: Management
Active
Active
Halted
Clone of Age of Empires II
freeaoe is a from-scratch, single-developer reimplementation of the Age of Empires II engine, still in early development.
Platforms:Windows
Stars237
Updated3 years ago
LicenseGPL-3.0
Release2019
Genre: Real-Time Strategy
Theme: Medieval
Active
Clone of Buzz Aldrin's Race Into Space
Race Into Space is the actively maintained free-software continuation of Buzz Aldrin's 1993 Race Into Space.
Platforms:WindowsLinuxOSX
Stars228
Updated12 days ago
LicenseGPL-2.0
Release2011
Genre: Strategy
Theme: Management
Halted
Sporadic
Clone of Balatro
Balatro TUI is a minimal, work-in-progress Rust clone of Balatro played entirely in a terminal, with logic and UI split across crates.
Platforms:None
Stars205
Updated4 months ago
LicenseGPL-3.0
Release2024
Genre: Turn-Based Strategy
Theme: —
Active
Active
Clone of Company of Heroes
A free, open-source WWII real-time strategy game for up to six factions, built on the Spring RTS Engine.
Platforms:WindowsLinux
Stars202
Updated1 month ago
LicenseUnknown
Release2013
Genre: Real-Time Strategy
Theme: World War II
Halted
Sporadic
Halted
Halted
Clone of Flotilla
Flotilla is Brendon Chung's official 2010 source release, combining turn-based 3D ship combat with randomized exploration events.
Platforms:Windows
Stars185
Updated3 years ago
LicenseZlib
Release2020
Genre: Turn-Based Strategy
Theme: Sci-Fi
Halted
Clone of Panzer General
A browser-based HTML5 take on Panzer General 2 written in plain JavaScript, playable on desktop and mobile browsers.
Active
Clone of Knights and Merchants
A modernized remake of Knights and Merchants adding 12-player multiplayer, reworked AI, and scripting support for custom maps.
Platforms:WindowsLinuxOSX
Stars176
Updated11 days ago
LicenseAGPL-3.0
Release2016
Genre: Real-Time Strategy
Theme: Medieval
Archived
Archived
Clone of Hogs of War
An archived, unfinished open-source Hogs of War reimplementation, shelved after an official remaster was announced.
Platforms:WindowsLinux
Stars170
Updated3 years ago
LicenseGPL-3.0
Release2017
Genre: Turn-Based Strategy
Theme: —
Sporadic
Clone of The Settlers
A C# port of Freeserf, an authentic remake of The Settlers I, requiring the original game's data files and adding new AI.
Platforms:WindowsLinux
Stars169
Updated3 months ago
LicenseGPL-3.0
Release2018
Genre: Real-Time Strategy
Theme: Medieval
Active
Clone of Stronghold
An actively developed, open-source isometric remake of Firefly Studios' Stronghold, built in the LÖVE engine.
Platforms:None
Stars166
Updated1 month ago
Licenseapache-2.0
Release2017
Genre: Real-Time Strategy
Theme: Medieval
Halted
Clone of King under the Mountain
A Java game built with LibGDX, originally developed by Rocket Jump Technology and released open source under the MIT license.
Active
Sporadic
Clone of StarCraft
A StarCraft remake built on the open-source Stratagus engine, requiring an existing StarCraft install for game data.
Platforms:WindowsLinuxOSX
Stars156
Updated9 months ago
LicenseGPL-2.0
Release2015
Genre: Real-Time Strategy
Theme: Sci-Fi
Sporadic
Clone of Dune 2
A cross-platform enhancement of Dune II built on OpenDUNE, adding widescreen graphics, multiplayer for up to 6, and fan campaigns.
Platforms:WindowsLinux
Stars154
Updated8 months ago
LicenseGPL-2.0
Release2023
Genre: Real-Time Strategy
Theme: Sci-Fi
Active
Clone of MechCommander 2
An open-source reimplementation of MechCommander 2's closed engine, fixing bugs, with networking left unfinished.
Platforms:WindowsLinux
Stars154
Updated27 days ago
LicenseGPL-3.0
Release2016
Genre: Real-Time Tactics
Theme: Sci-Fi
Active
Clone of Warcraft: Orcs & Humans
An in-progress C remake of Warcraft: Orcs & Humans using the original game's assets, with core RTS features implemented.
Platforms:WindowsLinuxRaspberry Pi
Stars153
Updated1 month ago
LicenseZlib
Release2018
Genre: Real-Time Strategy
Theme: Fantasy