Free & Open Source Post-Apocalyptic Games
19 free, open-source post-apocalyptic games — real clones and remakes you can download, inspect the source of, and modify.
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
Halted
No preview
Clone of Fallout
Fallout Community Edition reimplements the original Fallout's engine with bugfixes and QoL improvements, as a drop-in Windows replacement.
Platforms:WindowsLinuxOSX
Stars2,915
Updated1 year ago
LicenseUnknown
Release2023
Genre: RPG
Theme: Post-Apocalyptic
Active

Clone of Shardlight
An open-source engine reimplementation that lets classic point-and-click adventures and RPGs run on modern platforms.
Platforms:WindowsLinuxOSX
Stars2,811
Updated11 days ago
LicenseGPL-3.0
Release2011
Genre: Adventure
Theme: Post-Apocalyptic
Active

Clone of Strife
A source port that reproduces the original DOS Doom, Heretic, Hexen, and Strife with their original bugs intact on modern systems.
Platforms:WindowsLinuxOSX
Stars2,416
Updated18 days ago
LicenseGPL-2.0
Release2009
Genre: Action
Theme: Post-Apocalyptic
Active

Clone of Strife
Crispy Doom is a limit-removing Doom source port with higher resolution, widescreen, and uncapped framerate, staying demo-compatible.
Platforms:WindowsLinuxOSX
Stars947
Updated17 days ago
LicenseGPL-2.0
Release2014
Genre: Action
Theme: Post-Apocalyptic
Active
No preview
Clone of Strife
An advanced Doom-engine source port descended from SMMU, built with SDL2 and actively maintained across major platforms.
Platforms:WindowsOSX
Stars268
Updated19 days ago
LicenseGPL-3.0
Release2014
Genre: Action
Theme: Post-Apocalyptic
Sporadic
Halted

Clone of Strife
Night Dive Studios' 2020 GPL source release of Strife: Veteran Edition, the official remaster of 1996's Strife.
Platforms:WindowsLinuxOSX
Stars143
Updated4 years ago
LicenseGPL-2.0
Release2014
Genre: Action
Theme: Post-Apocalyptic
Sporadic

Clone of Krush, Kill 'n' Destroy
A semi-playable recreation of the KKnD real-time strategy games on the OpenRA engine.
Platforms:WindowsLinuxOSX
Stars126
Updated10 months ago
LicenseGPL-3.0
Release2018
Genre: Real-Time Strategy
Theme: Post-Apocalyptic
Halted

Clone of Good Robot
This is the official source code for Good Robot, a procedurally generated shoot-'em-up with light RPG elements by Pyrodactyl Games.
Platforms:WindowsLinuxOSX
Stars66
Updated6 years ago
LicenseMIT
Release2020
Genre: Shooter
Theme: Post-Apocalyptic
Halted

Clone of Interstate '76
An early-stage Unity reimplementation of the Interstate '76 engine that renders levels and cars from the original game data.
Platforms:None
Stars62
Updated6 years ago
LicenseGPL-3.0
Release2017
Genre: Action
Theme: Post-Apocalyptic
Active

Clone of Under a Killing Moon
A Windows-native engine reimplementation of the 1994 adventure game Under a Killing Moon, requiring the original game files.
Platforms:Windows
Stars27
Updated11 days ago
LicenseGPL-3.0
Release2022
Genre: Adventure
Theme: Post-Apocalyptic
Halted
No preview
Clone of Crystalis
A reassemblable disassembly of the NES game Crystalis for ca65, about 92% complete on PRG-ROM and 88% on CHR-ROM, free to use uncredited.
Active
No preview
Clone of Hard Truck Apocalypse
A reverse-engineered, in-progress reimplementation of Hard Truck Apocalypse that loads the original game's DLLs at runtime.
Platforms:Windows
Stars6
Updated12 days ago
LicenseUnknown
Release2021
Genre: Action
Theme: Post-Apocalyptic
Active

Clone of Interstate '76
A GPL vehicular deathmatch game built with the Crystal Space engine, CEL, and ODE physics, offering six vehicles and two maps.
Platforms:WindowsLinux
Stars3
Updated2 months ago
LicenseGPL-3.0
Release2023
Genre: Action
Theme: Post-Apocalyptic
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.

