Free & Open Source Modern Military Games
32 free, open-source modern military games — real clones and remakes you can download, inspect the source of, and modify.
Archived
Clone of Command & Conquer: Red Alert
Electronic Arts' official open-source Red Alert engine and code, paired with a Steam re-release bundling the base game and both expansions.
Platforms:Windows
Stars6,702
Updated1 year ago
LicenseGPL3*
Release2024
Genre: Real-Time Strategy
Theme: Modern Military
Archived
Clone of Command & Conquer: Generals
Electronic Arts' official open-source Zero Hour engine and code, paired with a Steam re-release adding Workshop support for community maps.
Platforms:Windows
Stars4,721
Updated1 year ago
LicenseGPL3*
Release2024
Genre: Real-Time Strategy
Theme: Sci-Fi
Archived
Clone of Command & Conquer
Electronic Arts' official open-source release of the Tiberian Dawn engine, paired with a Steam re-release of the campaigns.
Platforms:Windows
Stars1,808
Updated1 year ago
LicenseGPL3*
Release2024
Genre: Real-Time Strategy
Theme: Modern Military
Archived
Clone of Command & Conquer: Renegade
Electronic Arts' official open-source release of the Renegade engine, paired with a Steam re-release adding Workshop support for user maps.
Archived
Clone of Command & Conquer
Electronic Arts' official source release for the C&C Remastered Collection, supporting Steam Workshop maps and mods for the 4K remaster.
Platforms:Windows
Stars21,391
Updated1 year ago
LicenseUnknown
Release2020
Genre: Real-Time Strategy
Theme: Modern Military
Active
Clone of Command & Conquer
An open-source RTS engine that reimagines Red Alert, Tiberian Dawn and Dune 2000, with online multiplayer and modding tools.
Platforms:WindowsLinuxOSX
Stars17,376
Updated12 days ago
LicenseGPL-3.0
Release2010
Genre: Real-Time Strategy
Theme: Modern Military
Active
Clone of S.T.A.L.K.E.R.
A community-improved X-Ray Engine for S.T.A.L.K.E.R. with 64-bit support, bug fixes and Linux/macOS ports.
Platforms:Windows
Stars3,559
Updated11 days ago
LicenseUnknown
Release2014
Genre: FPS
Theme: Alternate Historical
Active
Clone of War Thunder
Dagor Engine is Gaijin Entertainment's official open-source release of the engine behind War Thunder, with a full build toolkit.
Platforms:Windows
Stars2,962
Updated1 month ago
LicenseUnknown
Release2023
Genre: Action
Theme: Modern Military
Sporadic
Clone of Command & Conquer: Generals
An early-stage, not-yet-playable open-source re-implementation of EA's SAGE engine, targeting C&C: Generals and Zero Hour.
Platforms:WindowsLinuxOSX
Stars1,635
Updated6 months ago
LicenseUnknown
Release2017
Genre: Real-Time Strategy
Theme: Sci-Fi
Sporadic
Active
Clone of Command & Conquer: Red Alert 2
An OpenRA-engine mod recreating Command & Conquer: Red Alert 2 for Windows, Linux, and macOS.
Platforms:WindowsLinuxOSX
Stars1,132
Updated2 months ago
LicenseGPL-3.0
Release2015
Genre: Real-Time Strategy
Theme: Modern Military
Active
Clone of Command & Conquer: Red Alert 2
RA2Web React is a from-scratch TypeScript/React/Three.js rebuild of Red Alert 2's engine, playable in a web browser.
Platforms:Web
Stars965
Updated23 days ago
LicenseUnknown
Release2025
Genre: Real-Time Strategy
Theme: Modern Military
Halted
Halted
Active
Clone of Jagged Alliance 2
A community-maintained continuation of JA2-Stracciatella, running Jagged Alliance 2 on modern systems using data from an original copy.
Active
Archived
Halted
Clone of Ace Combat: Assault Horizon
An open-source reimplementation of Ace Combat: Assault Horizon's rendering and physics, without Dog Fight Mode.
Platforms:WindowsLinuxOSX
Stars175
Updated4 years ago
LicenseMIT
Release2014
Genre: Action
Theme: Modern Military
Sporadic
Clone of Armor Alley
Armor Alley: Remastered is a browser-based JavaScript/HTML5 remake of the Mac and MS-DOS original, still in sporadic development.
Platforms:Web
Stars128
Updated3 months ago
LicenseUnknown
Release2013
Genre: Arcade
Theme: Modern Military
Halted
Clone of Soldat
A Rust-based open-source clone of the Soldat game engine, aiming for a feature-complete authentic port.
Active
Clone of Strike Commander
libRealSpace is a cross-platform reimplementation of Origin Systems' RealSpace engine, also used by Strike Commander.
Platforms:WindowsLinuxOSX
Stars45
Updated13 days ago
LicenseUnknown
Release2022
Genre: Action
Theme: Modern Military
Halted
Clone of Commando
CommandoJS is an HTML5 canvas/audio study in CoffeeScript recreating the C64 Commando, with only a rough, unoptimized first level.
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
Halted
Archived
Halted
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
Halted
Clone of Liberation Day
An early-stage Unity remake of Liberation Day, still far from playable, with progress limited to tools extracting the original's data.
Platforms:None
Stars0
Updated9 years ago
LicenseMIT
Release2017
Genre: Turn-Based Strategy
Theme: Modern Military
Clone of Army Men II
A fan-made, unofficial 3D third-person-shooter sequel to Army Men II, released with source code and playable on Windows in its beta state.
