Free & Open Source Simulation Games
256 free, open-source simulation 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
Original game image
Original game imageClone of Pilotwings 64
Pilotwings 64 as a native PC port for Windows and Linux with widescreen and high refresh rates, built from your own ROM.
Stars14
Updated1 month ago
LicenseUnknown
Release2026
Genre: Simulation
Theme: —
Halted
Original game image
Original game imageClone of Star Raiders
A disassembly of Star Raiders' original 6502 assembly source, not a reimplementation; a work in progress and not yet playable.
Halted
Clone of Lunar Lander
A Python/Pygame Lunar Lander clone with procedural terrain, demo mode, and a built-in AI autopilot.
Active
Original game image
Original game imageClone of Armored Core
A static recompilation project for Armored Core (USA) on PlayStation, using PSXRecomp.
Stars12
Updated1 month ago
LicenseGPL-3.0
Release2026
Genre: Action
Theme: —
Halted
Halted
Original game image
Original game imageClone of LSD: Dream Emulator
A work-in-progress attempt at decompiling the 1998 video game LSD: Dream Emulator, mainly intended as a verifiable reference for the more…
Stars12
Updated2 years ago
LicenseUnknown
Release2024
Genre: Action
Theme: —
Halted
Original game image
Original game imageClone of Rowan's Battle of Britain
The source code for Rowan's Battle of Britain, per its minimal README with no further build or gameplay details given.
Halted
Clone of Transport Tycoon
Platforms:WindowsDOS
Stars11
Updated8 years ago
LicenseGPL-2.0
Release2017
Genre: Strategy
Theme: Management
Halted
Clone of Starshatter
The Starshatter space combat simulator's source code, migrated from Google Code and released under a BSD license.
Sporadic
Clone of Super Star Trek
A Game Maker Studio remake of the Adventure Game Studio fan game Super Star Trek Meets 25th Anniversary.
Halted
Halted
Active
Original game image
Original game imageClone of Aces of the Pacific
An enhanced native port of Dynamix's Aces of the Pacific (1992), built on a separate SDL3 port of the game.
Stars6
Updated1 month ago
LicenseUnknown
Release2026
Genre: Simulation
Theme: —
Active
Clone of Colony Wars: Red Sun
A static recompilation kit for Colony Wars: Red Sun: you supply the disc image and BIOS, and setup builds it locally.
Stars6
Updated1 month ago
LicenseGPL-3.0
Release2026
Genre: Simulation
Theme: —
Sporadic
Clone of Lego Creator: Knights' Kingdom
A project reverse engineering LEGO Creator: Knights Kingdom and building a modernized version with expanded functionality.
Stars6
Updated4 months ago
LicenseUnknown
Release2024
Genre: Simulation
Theme: —
Sporadic
Original game image
Original game imageClone of Minecraft 4k
A decompilation of Minecraft 4K, turned from a Java applet into a standalone application.
Sporadic
Original game image
Original game imageClone of Pharaoh
An early Godot 3.6 project to recreate the engine of Impressions Games' city builders like Pharaoh and Zeus.
Platforms:WindowsLinuxOSX
Stars6
Updated8 months ago
LicenseUnknown
Release2026
Genre: Simulation
Theme: Ancient History
Halted
Clone of SimCity
A disassembly of the USA SNES SimCity ROM, built on the author's own SNES ROM framework for asset extraction.
Sporadic
Active
Original game image
Original game imageClone of Wonder Project J2
A work-in-progress decompilation of Wonder Project J2 that builds the wonderprojectj2.jp.z64 ROM.
Stars6
Updated2 months ago
LicenseCC0-1.0
Release2025
Genre: Simulation
Theme: —
Halted
Original game image
Original game imageClone of ECrew Development Program
A work-in-progress decompilation of eCrew Development Program, described as McDonald's lost training game preserved by babylonian.
Stars6
Updated2 years ago
LicenseUnknown
Release2024
Genre: educational video game
Theme: —
Halted
Original game image
Original game imageClone of Stratosphere: Conquest of the Skies
A planned, unplayable 2D/2.5D remake of Stratosphere: Conquest of the Skies about building and flying a spaceship.
Sporadic
Original game image
Original game imageStars5
Updated4 months ago
LicenseUnknown
Release2026
Genre: Real-Time Strategy
Theme: —
Halted
Active
Original game image
Original game imageClone of Colony Wars
A release-candidate PSXRecomp-based recompilation of Colony Wars that needs your own game disc and Europe BIOS.
Stars3
Updated1 month ago
LicenseUnknown
Release2026
Genre: Simulation
Theme: —
Halted
Halted
Halted
Halted
Clone of Civil War Strategy
A turn-based Civil War strategy wargame by W.R. Hutsell, with its original source preserved and a QB64-ported branch.
Sporadic
Active
Clone of Monster Rancher 2
A static recompilation of Monster Rancher 2 for modern systems, built on the psxrecomp and recomp-ui frameworks.
Stars2
Updated1 month ago
LicenseGPL-3.0
Release2026
Genre: Simulation
Theme: —
Active
Original game image
Original game imageClone of Monster Rancher
A PSXRecomp-based recompilation of Monster Rancher; you supply your own disc and BIOS.
Stars2
Updated1 month ago
LicenseUnknown
Release2026
Genre: Simulation
Theme: —
Halted
Original game image
Original game imageClone of The Sims 2: Castaway
A work-in-progress disassembly and decompilation of The Sims 2 Castaway for Wii (US build).
Stars2
Updated4 years ago
LicenseUnknown
Release2022
Genre: Simulation
Theme: —
Sporadic
Original game image
Original game imageHalted
Clone of Civil War Battleset
The preserved original DOS source code for W.R. Hutsell's tactical Civil War wargame, kept unedited for history.
Sporadic
Original game image
Original game imageClone of Lunar Lander
A Bitcoin-themed browser twist on Lunar Lander, updated with an easier landing mode, adjustable gravity, and a lower-spec performance mode.
Halted
Sporadic
Clone of Lunar Lander
A retro-styled arcade game written in CircuitPython for the Adafruit Fruit Jam.
Halted