Contribute > Team Policies


The GNU Public License allows a user to use Open Rails in any way, except that you may not distribute software containing part of Open Rails without respecting the license terms.


Open Rails is intended for entertainment purposes only and, to avoid liability, is not suitable for professional applications.

Code Submissions

Code contributions to our repository must be in Microsoft's C# language. An authorised developer may not change content in the official version of Open Rails without approval from another authorised developer.

Content Compatibility

Open Rails will continue to maintain compatibility with content from previous official versions of Open Rails.

File Formats

New types of content will use the JavaScript Object Notation (JSON).
Existing types of content from previous official versions of Open Rails will continue to be loaded without change.

User Language

English documents and text use American spelling (license, color etc.).

Keyboard Assignments

New key assignments should obey the following rules where that is possible.

  • Reserve digit keys for camera operations.
  • Reserve Fn keys for pop-up windows.
  • Reserve the Alt modifier for debug operations.
  • Reserve modifier+space (e.g. Ctrl+space) for future expansion using sequences of keys.
Existing key assignments may not be changed without community discussion and approval of the Open Rails Management Team.