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.

Moon Lander

Clone of Lunar Lander

Platforms:WindowsLinux

LicenseBSD*

Genre: Simulation

Theme: —

Naev

Clone of Escape Velocity

Platforms:WindowsLinuxOSX

LicenseGPL3*

Genre: Action

Theme: —

No Gravity

Clone of Wing Commander series

Platforms:WindowsLinuxBeOS

LicenseGPL2*

Genre: Action

Theme: Sci-Fi

No preview

Olympia PBEM

Clone of Olympia PBEM

Platforms:None

LicenseBSD*

Genre: Turn-Based Strategy

Theme: Fantasy

No preview

Olympia g3

Clone of Olympia PBEM

Platforms:Windows

LicenseBSD*

Genre: Turn-Based Strategy

Theme: Fantasy

OpenCity

Clone of SimCity

Platforms:Windows

LicenseGPL2*

Genre: Simulation

Theme: Management

OpenTrek

Clone of Super Star Trek

Platforms:WindowsLinux

LicenseGPL2*

Genre: Simulation

Theme: Sci-Fi

Pizza Business

Clone of Pizza Tycoon

Platforms:WindowsLinux

LicenseGPL2*

Genre: Simulation

Theme: —

Pizza Legacy

Clone of Pizza Tycoon

Platforms:WindowsLinuxOSX

LicenseGPL3*

Genre: Simulation

Theme: —

Pocket Music

Clone of Pocket Music

Platforms:Game Boy

LicenseUnknown

Genre: Rhythm

Theme: —

Privateer - Gemini Gold

Clone of Wing Commander: Privateer

Platforms:WindowsLinuxOSX

LicenseGPL2*

Genre: Action

Theme: Sci-Fi

Rocket

Clone of Lunar

Platforms:Atari

LicenseUnknown

Genre: Simulation

Theme: —

Original game image

Scram

Clone of Scram

Platforms:Atari

LicenseUnknown

Genre: Educational

Theme: —

No preview

Soul Ride snowboarding simulation

Clone of Soul Ride

Platforms:WindowsLinux

LicenseGPL2*

Genre: Sports

Theme: —

Space Glider

Clone of Starglider 2

Platforms:WindowsLinuxDOS

LicenseUnknown

Genre: Simulation

Theme: Sci-Fi

No preview

Stellar Frontier

Clone of Stellar Frontier

Platforms:Windows

LicenseUnknown

Genre: Simulation

Theme: —

The Clue!

Clone of The Clue!

Platforms:Windows

LicenseGPL2*

Genre: Adventure

Theme: —

Original game image

Theme Park Builder 3D CAD

Clone of Theme Park

Platforms:None

LicenseGPL3*

Genre: Strategy

Theme: Management

Original game image

Trust & Betrayal

Clone of Trust & Betrayal: The Legacy of Siboot

Platforms:Classic Mac OS

LicenseUnknown

Genre: Educational

Theme: Sci-Fi

World Train Royale

Clone of World Train Royale

Platforms:Windows

LicenseUnknown

Genre: Simulation

Theme: —

Original game image

flOw flash version source code

Clone of flOw

Platforms:None

LicenseUnknown

Genre: Simulation

Theme: —

glFFE

Clone of Elite III

Platforms:Windows

LicenseUnknown

Genre: Action

Theme: Sci-Fi

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