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: Red Alert
An open-source RTS engine that reimagines Red Alert, Tiberian Dawn and Dune 2000, with online multiplayer and modding tools.
Platforms:WindowsLinuxOSX
Stars17,376
Updated1 month 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
Updated1 month 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
Updated2 months 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
Updated7 months ago
LicenseUnknown
Release2017
Genre: Real-Time Strategy
Theme: Sci-Fi
Sporadic
Original game image
Original game imageClone of Soldat
The open-sourced 1.8 codebase of Soldat, the fast-paced 2D side-view multiplayer shooter, buildable on Windows, Linux and macOS.
Platforms:WindowsLinuxOSX
Stars1,465
Updated10 months ago
LicenseMIT
Release2018
Genre: Platform
Theme: Modern Military
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
Updated3 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
Updated2 months ago
LicenseUnknown
Release2025
Genre: Real-Time Strategy
Theme: Modern Military
Halted
Original game image
Original game imageClone of Command & Conquer
This is a fan-made recreation of the original Command & Conquer RTS game, built as an HTML5/JavaScript technical proof of concept.
Platforms:Web
Stars806
Updated6 years ago
LicenseUnknown
Release2012
Genre: Real-Time Strategy
Theme: Modern Military
Halted
Original game image
Original game imageClone of Command & Conquer: Generals
An open-source rewrite of Command & Conquer Generals: Zero Hour, currently requiring the original game's binary.
Platforms:Windows
Stars690
Updated2 years ago
LicenseGPL-2.0
Release2017
Genre: Real-Time Strategy
Theme: Sci-Fi
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.
ActiveOriginal game image
Original game imageClone of Command & Conquer
A portable open-source reimplementation of the original Command & Conquer engine, running Tiberian Dawn and Red Alert.
Platforms:WindowsLinuxOSX
Stars462
Updated3 months ago
LicenseUnknown
Release2020
Genre: Real-Time Strategy
Theme: Modern Military
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
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
Stars129
Updated4 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
Updated1 month 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
Original game image
Original game imageClone of Enemy Engaged
The official public source-code release for the combat flight simulator Enemy Engaged: Comanche vs Hokum, targeting Windows.
Platforms:Windows
Stars23
Updated5 years ago
LicenseUnknown
Release2018
Genre: Simulation
Theme: Modern Military
Archived
Original game image
Original game imageClone of Commando
Platforms:Atari
Stars18
Updated11 years ago
LicenseUnknown
Release2015
Genre: Shooter
Theme: Modern Military
Halted
Original game image
Original game imageClone of Army Men
Preserves the original 1998 Army Men source code and dev tools from The 3DO Company, including level, scenario, and animation editors.
Platforms:Windows
Stars14
Updated1 year ago
LicenseCC0-1.0
Release2022
Genre: Real-Time Tactics
Theme: Modern Military
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
Original game image
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.
Original game image