Free & Open Source Strategy Games
380 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.
Halted
Clone of The Settlers
Freeserf is a remake that requires the original DOS or Amiga data files to run, playable on Windows, Linux, and macOS.
Platforms:WindowsLinuxOSX
Stars338
Updated2 years ago
LicenseGPL-3.0
Release2011
Genre: Real-Time Strategy
Theme: Medieval
Active
Original game image
Original game imageClone of Pokémon Trading Card Game
A disassembly rebuilding the original Pokémon Trading Card Game Game Boy Color ROM from source.
Platforms:Game Boy
Stars328
Updated2 months ago
LicenseUnknown
Release2014
Genre: Card Game
Theme: —
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
Updated3 months 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
Original game image
Original game imageClone of Caesar III
An open-source remake of Caesar III on its own SDL2-based engine, playable but still in an early, experimental stage.
Platforms:WindowsLinuxOSX
Stars296
Updated9 years ago
LicenseUnknown
Release2014
Genre: Simulation
Theme: Management
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
Updated1 month ago
LicenseLGPL-3.0
Release2019
Genre: Turn-Based Strategy
Theme: —
Sporadic
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
Original game image
Original game imageClone of Natural Selection
The official GPL source release of Natural Selection, the Half-Life mod by Unknown Worlds.
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
Updated1 month ago
LicenseGPL-3.0
Release2020
Genre: Turn-Based Strategy
Theme: —
Halted
Original game image
Original game imageClone of Civilization
CivOne is a project related to the original Civilization game, but its README gives no further detail on its scope or features.
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
Updated1 month ago
LicenseUnknown
Release2015
Genre: Simulation
Theme: Management
Active
Original game image
Original game imageClone of Syndicate Wars
A port of 1996's Syndicate Wars to modern Windows, macOS, and Linux, built from the original DOS executable.
Platforms:WindowsLinuxOSX
Stars248
Updated1 month ago
LicenseUnknown
Release2015
Genre: Real-Time Tactics
Theme: Cyberpunk
Active
Original game image
Original game imagePlatforms:None
Stars239
Updated3 months ago
LicenseUnknown
Release2016
Genre: Real-Time Strategy
Theme: Sci-Fi
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
Original game image
Original game imageStars231
Updated4 months ago
LicenseCC0-1.0
Release2023
Genre: Strategy
Theme: —
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
Updated1 month ago
LicenseGPL-2.0
Release2011
Genre: Strategy
Theme: Management
Active
Original game image
Original game imageClone of Fire Emblem: The Sacred Stones
A disassembly of Fire Emblem: The Sacred Stones (U) that builds a ROM matching a stated SHA-1, from your own base ROM.
Stars220
Updated2 months ago
LicenseUnknown
Release2018
Genre: RPG
Theme: —
Halted
Original game image
Original game imageClone of Warfare Incorporated
Hostile Takeover is Spiffcode's BSD-licensed open-source release of Warfare Incorporated, with ports for macOS, iOS, Android, and Linux.
Platforms:WindowsLinuxOSX
Stars210
Updated9 years ago
LicenseUnknown
Release2014
Genre: Real-Time Strategy
Theme: Sci-Fi
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
Updated6 months ago
LicenseGPL-3.0
Release2024
Genre: Turn-Based Strategy
Theme: —
Active
Original game image
Original game imageClone of Pokémon Stadium
A work-in-progress decompilation rebuilding the original Pokémon Stadium Nintendo 64 ROM from source.
Platforms:N64
Stars203
Updated1 month ago
LicenseUnknown
Release2014
Genre: Turn-Based Strategy
Theme: Fantasy
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
Updated2 months ago
LicenseUnknown
Release2013
Genre: Real-Time Strategy
Theme: World War II
Active
Original game image
Original game imageClone of Pikmin
A native Linux, Windows and Android port of Pikmin built on the decompilation, with 120 FPS, widescreen and co-op.
ActiveOriginal game image
Original game imageClone of Pikmin
A native Linux, Windows and Android port of Pikmin built on its decompilation, running without an emulator.
ActiveOriginal game image
Original game imageClone of Pikmin
Open Nectar is a native Linux, Windows and Android port of Pikmin that runs without an emulator.
Halted
Sporadic
Original game image
Original game imageClone of Fallout Tactics: Brotherhood of Steel
FreeFT is a stalled, open-source real-time isometric action engine inspired by Fallout Tactics, requiring the original game's resources.
Platforms:Windows
Stars191
Updated11 months ago
LicenseGPL-3.0
Release2013
Genre: Real-Time Tactics
Theme: —
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
Updated1 month ago
LicenseAGPL-3.0
Release2016
Genre: Real-Time Strategy
Theme: Medieval
Archived
Original game image
Original game imageClone of Command & Conquer: Red Alert
An open-source reimplementation of Command & Conquer: Red Alert for Windows, still relying on the original game's binary.
Platforms:Windows
Stars175
Updated6 years ago
LicenseGPL-2.0
Release2018
Genre: Real-Time Strategy
Theme: Modern Military
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
Updated4 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
Updated4 months ago
LicenseGPL-3.0
Release2018
Genre: Real-Time Strategy
Theme: Medieval