Open Rails

Download > Versions


Three Versions of Open Rails

Three versions of Open Rails are readily available to users, as shown below:

For first-time users, we recommend the Stable Version which comes with an installer.


Whichever version you choose, Open Rails has a mechanism to notify you of new versions and to update Open Rails for you. You will find the settings for this mechanism in Menu > Options > Update

Open Rails will check for updates at most once a day. If an update is found, then you can install the update just by clicking on the link in the top, right corner:

Testing Version

If you follow the Open Rails project on the forums, then you will hear about bug-fixes and new features. These are included in the Unstable Version for developers and testers to try out. Once they have been checked and approved, they are published (on Friday) as the latest Testing Version. Any user can easily update to the current weekly Testing Version and benefit from these improvements.

For reference all the Testing Versions (executable and source) can be found in our archive.

Recent Code Changes

  • T1.5.1-997-gb5992851e Merge pull request #948 from SteelFill/lights_bugfix
    Fix Cycling Lights
    • bc806e2d Avoid crash with unreasonable state counts
    • a0e160c1 Fix Cycle crash for light cones
    • a687981d Merge branch 'openrails:master' into lights_bugfix
    • 9612141c Fix cycling lights from causing an index out of bounds exception

See more code changes

The current Testing Version can also be downloaded as a Zip archive:


14 June 2024, 98MB

The documents included in the Testing Versions downloads can be found on-line at:

Note: Multiple versions of Open Rails will not interfere if they are saved to different folders.

Unstable Version

To support development, the latest unstable version is also available, which is updated whenever a developer publishes a change. The unstable versions are more likely to contain serious bugs and are only recommended for users wishing to help with Open Rails development.

The Manual for the Unstable version is not included in the download, but is available on-line.

For reference all the Unstable Versions (executable and source) can be found in our Unstable archive.


Improvements to Open Rails are drawn from several public sources as shown here:

We try to make sure that these changes all work and fit together by reviews as marked in orange in the diagram.