Cloned Games

Free & Open Source Simulation Games

221 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.

Sporadic
No preview
ASIC Lander

Clone 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.
Platforms:Web
Stars1
Updated11 months ago
LicenseUnknown
Release2025
Genre: Simulation
Theme: —
Halted
No preview
EliteGL

Clone of Elite

An OpenGL/SDL port to Linux of Christian Pinder's Elite: The New Kind, itself a Windows/Allegro remake of the original Elite.
Platforms:Linux
Stars1
Updated5 years ago
LicenseUnknown
Release2020
Genre: Action
Theme: Sci-Fi
Sporadic
Moon Miner screenshot
Moon Miner

Clone of Lunar Lander

A retro-styled arcade game written in CircuitPython for the Adafruit Fruit Jam.
Platforms:Raspberry Pi
Stars1
Updated8 months ago
LicenseGPL-3.0
Release2025
Genre: Simulation
Theme: —
Halted
No preview
OpenArena (gladiator management game)

Clone of Areena 5

An open-source Java gladiator management game, aiming to become a fully reimagined Areena 5.
Platforms:None
Stars1
Updated1 year ago
Licensegpl-3.0
Release2022
Genre: Simulation
Theme: Fantasy
Halted
No preview
StawdewValley

Clone of Stardew Valley

A decompiled release of Stardew Valley's source code, currently unplayable in its present state.
Platforms:Windows
Stars1
Updated9 years ago
LicenseUnknown
Release2017
Genre: Simulation
Theme: —
Halted
Super Star Trek meets 25th Anniversary screenshot
Super Star Trek meets 25th Anniversary

Clone of Super Star Trek

A remake of the 1978 strategy game Super Star Trek, reimagined with the bridge-crew command interface of Star Trek: 25th Anniversary.
Platforms:WebWindowsLinux
Stars1
Updated1 year ago
LicenseUnknown
Release2025
Genre: Simulation
Theme: Sci-Fi
Halted
No preview
BaconBytes.StarTrek

Clone of Star Trek

A C# port of the classic Star Trek text game, based on a community BASIC rewrite, including multiple translated and rewritten versions.
Platforms:None
Stars0
Updated9 years ago
LicenseUnknown
Release2024
Genre: Simulation
Theme: Sci-Fi
Halted
No preview
ClassicStarTrek

Clone of Star Trek

Platforms:WindowsLinuxOSX
Stars0
Updated4 years ago
LicenseUnknown
Release2022
Genre: Simulation
Theme: Sci-Fi
Halted
Solaris Source screenshot
Solaris Source

Clone of Solaris

Source code said to be the original 1986 Atari 2600 game Solaris, preserved via RomHacking.net.
Platforms:Atari
Stars0
Updated1 year ago
LicenseUnknown
Release2025
Genre: Simulation
Theme: Sci-Fi
Halted
Tiny Trek（Pyxel） screenshot
Tiny Trek（Pyxel）

Clone of Tiny Trek

Platforms:None
Stars0
Updated3 years ago
LicenseUnknown
Release2022
Genre: Simulation
Theme: Sci-Fi
Sporadic
W.R. Hutsell's Wars of Napoleon Game screenshot
W.R. Hutsell's Wars of Napoleon Game

Clone of Wars of Napoleon

The preserved original DOS source code for W.R. Hutsell's Napoleonic Wars wargame, kept unedited for history.
Platforms:DOS
Stars0
Updated9 months ago
LicenseMIT
Release2021
Genre: Simulation
Theme: —
Halted
W.R. Hutsell's World War 2 In Western Europe Game screenshot
W.R. Hutsell's World War 2 In Western Europe Game

Clone of World War II In Western Europe

The preserved original DOS source code for W.R. Hutsell's Second World War strategy wargame, kept unedited for history.
Platforms:DOS
Stars0
Updated1 year ago
LicenseMIT
Release2021
Genre: Simulation
Theme: World War II
1972 Star Trek in Python screenshot
1972 Star Trek in Python

Clone of Star Trek

Platforms:HP calculator
LicenseUnknown
Genre: Simulation
Theme: Sci-Fi
No preview
Atlantis

Clone of Olympia PBEM

Platforms:WindowsLinux
LicenseGPL2*
Genre: Turn-Based Strategy
Theme: Fantasy
No preview
Balance of Power 1990

Clone of Balance of Power

Platforms:Classic Mac OS
LicenseUnknown
Genre: Simulation
Theme: —
No preview
Balance of the Planet

Clone of Balance of the Planet

Platforms:Classic Mac OS
LicenseUnknown
Genre: Educational
Theme: —
No preview
Balance of the Planet (2010)

Clone of Balance of the Planet

Platforms:None
LicenseUnknown
Genre: Educational
Theme: —
No preview
Barbie Super Model Source Code

Clone of Barbie: Super Model

Platforms:Game Gear
LicenseUnknown
Genre: Action
Theme: —
Chopper Commando screenshot
Chopper Commando

Clone of Chopper Commando

Platforms:DOS
LicenseUnknown
Genre: Flight
Theme: —
Danger from the Deep screenshot
Danger from the Deep

Clone of Silent Hunter 4

Platforms:Windows
LicenseCC-BY-NC-ND, GPL2*
Genre: Action
Theme: World War II
Dungeon Digger screenshot
Dungeon Digger

Clone of Dungeon Keeper

Platforms:WindowsLinux
LicenseGPL2*
Genre: Simulation
Theme: Horror
No preview
Elite : Harmless

Clone of Elite

Platforms:C64
LicenseCC-BY-NC-SA*
Genre: Action
Theme: Sci-Fi
Elite Disassembly screenshot
Elite Disassembly

Clone of Elite

Platforms:Apple II
LicenseUnknown
Genre: Action
Theme: Sci-Fi
Elite remake screenshot
Elite remake

Clone of Elite

Platforms:WindowsLinux
LicenseUnknown
Genre: Action
Theme: Sci-Fi
No preview
Energy Czar

Clone of Energy Czar

Platforms:Atari
LicenseUnknown
Genre: Educational
Theme: —
Epoch Disassembly screenshot
Epoch Disassembly

Clone of Epoch

Platforms:Apple II
LicenseUnknown
Genre: Simulation
Theme: Sci-Fi
FlightGear screenshot
FlightGear

Clone of Microsoft Flight Simulator

Platforms:WindowsLinuxOSX
LicenseGPL2*
Genre: Simulation
Theme: —
FreeRails 2 screenshot
FreeRails 2

Clone of Railroad Tycoon

Platforms:None
LicenseGPL2*
Genre: Simulation
Theme: Management
FreeTrain screenshot
FreeTrain

Clone of A-Train

Platforms:Windows
LicenseLGPL2*
Genre: Simulation
Theme: —
Frontier 1337 screenshot
Frontier 1337

Clone of Elite II

Platforms:PSP
LicenseUnknown
Genre: Action
Theme: Sci-Fi
No preview
Gossip

Clone of Gossip

Platforms:Atari
LicenseUnknown
Genre: Simulation
Theme: —
No preview
IronSeedSharp

Clone of Ironseed

Platforms:Windows
LicenseGPL3*
Genre: Simulation
Theme: Sci-Fi
Kaiser II screenshot
Kaiser II

Clone of Kaiser II

Platforms:Atari
LicenseGPL2*
Genre: Turn-Based Strategy
Theme: —
LEM screenshot
LEM

Clone of Lunar

Platforms:Atari
LicenseUnknown
Genre: Simulation
Theme: —
Lander screenshot
Lander

Clone of Lunar Lander

Platforms:HP calculator
LicenseUnknown
Genre: Simulation
Theme: —
Lander 2 screenshot
Lander 2

Clone of Jupiter Lander

Platforms:WindowsLinux
LicenseUnknown
Genre: Simulation
Theme: —
Lander! screenshot
Lander!

Clone of Jupiter Lander

Platforms:WindowsLinux
LicenseGPL2*
Genre: Simulation
Theme: —
No preview
Lemonade Stand

Clone of Lemonade Stand

Platforms:Apple II
LicenseUnknown
Genre: Educational
Theme: —
Lincity screenshot
Lincity

Clone of SimCity

Platforms:WindowsLinux
LicenseGPL2*
Genre: Simulation
Theme: Management

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