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daid/EmptyEpsilon

Open-source cross-platform bridge simulator inspired by Artemis Spaceship Bridge Simulator, with a Game Master mode and multiple AI factions.

Open-source alternative to:Artemis Spaceship Bridge Simulator

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What is it?

EmptyEpsilon is a multiplayer bridge simulator in which a crew of players operates a spaceship together, with each player handling a station such as helm, weapons, or science. It began as a cross-platform, open-source clone of Artemis Spaceship Bridge Simulator and has since added its own features and gameplay, including a Game Master mode and multiple AI factions.

The game is written in C++ on the SeriousProton engine and uses SDL2 for much of its low-level work. Official builds are provided for Windows, Linux (as a .deb package), and Android (beta quality). All players and the host must run the same version to connect.

Scenarios are scripted, and the project includes a scripting API reference, a mission scripting guide, and a built-in tutorial. Settings are stored in an options.ini file, and the wiki covers building from source, hardware and DMX support, headless servers, and an HTTP API server.

Key features

  • 01Multiplayer ship operation split across crew stations such as helm, weapons, and science.
  • 02Game Master mode for controlling and scripting scenarios during a session.
  • 03Multiple AI factions with their own behavior.
  • 04Runs on Windows, Linux (.deb), and Android (beta).
  • 05Scenario scripting with a versioned API reference and a built-in tutorial.

Use cases

  • Running a cooperative bridge-crew game session with friends or a group.
  • Hosting scripted missions for a classroom, club, or event with a Game Master.
  • Building custom scenarios and ship templates in Lua-based scripting.
  • Connecting hardware controls or DMX-based setups to a game session.

Topics

#game#simulation#multiplayer#cpp#lua#sdl2#cross-platform#artemis#emptyepsilon

FAQ

What is EmptyEpsilon?
Open-source cross-platform bridge simulator inspired by Artemis Spaceship Bridge Simulator, with a Game Master mode and multiple AI factions. EmptyEpsilon is a multiplayer bridge simulator in which a crew of players operates a spaceship together, with each player handling a station such as helm, weapons, or science. It began as a cross-platform, open-source clone of Artemis Spaceship Bridge Simulator and has since added its own features and gameplay, including a Game Master mode and multiple AI factions.
Is EmptyEpsilon free to use? What license does it have?
EmptyEpsilon is open source under the GPL-2.0 license. Check the license terms before using it in commercial products.
Is EmptyEpsilon still maintained?
Actively maintained. The last commit to EmptyEpsilon was on Oct 15, 2026.
What can I use EmptyEpsilon for?
Running a cooperative bridge-crew game session with friends or a group. Hosting scripted missions for a classroom, club, or event with a Game Master. Building custom scenarios and ship templates in Lua-based scripting. Connecting hardware controls or DMX-based setups to a game session.
Where can I get EmptyEpsilon?
The source code and installation instructions are on GitHub: https://github.com/daid/EmptyEpsilon

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