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.

Updater

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

• T1.5.1-1948-gdf7bf1a26 Merge pull request #1117 from albertosaurio65/ORTS_PLAYER_DIESEL_ENGINE_STATE-fix
  ORTS_PLAYER_DIESEL_ENGINE_STATE manual fix
  • 6b150dd0 Update Source/Documentation/Manual/cabs.rst
    Co-authored-by: César Benito Lamata
  • 24702ca7 ORTS_PLAYER_DIESEL_ENGINE_STATE manual fix
    The states indicated in the manual don't correspond to what actually happens, but with the changes made now they do. The example has also been changed, as "display-only" is specified and a multistate mouse control was being used.
• T1.5.1-1945-g739a03116 Merge pull request #1113 from openrails/release/1.6
  Merge pull request #1108 from SteelFill/ai_lights_fix
  • 1bdb4bdf Merge pull request #1118 from rwf-rr/fix-dpmode-first-last-fence
    Fix DPMode when last remote is moved to front. (r1.6)
  • 47e9b25f Merge pull request #1116 from SteelFill/animation_fix
    Fix Potential Hang in AnimatedPart.SetFrameWrap
  • 3cfe7c90 Merge pull request #1114 from rwf-rr/fix-db-setup-color-with-dpu
    Fix color of DB in DrivingInfo when in setup with DPU fenced. (r1.6)
  • 45562fae Merge pull request #1119 from twpol/feature/missing-pr-1103
    Re-add missing PR #1103
  • 53a4f91b Merge pull request #1112 from cjakeman/update-installer
    update for V1.6
  • de3ec882 Merge pull request #1109 from SteelFill/depart_early_fix
    Fix Erroneous Detection of Departure Before Passenger Boarding Completed
  • 5d58e450 Merge pull request #1108 from SteelFill/ai_lights_fix
    Fix Horn, Bell, and MU light conditions on AI trains

See more code changes

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

04 July 2025, 106MB

• Installation Guide (English)

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

• Architecture Diagram V1.pdf
• Contenct checker.pdf
• How to Provide Track Profiles for Open Rails Dynamic Track.pdf
• Installation Guide En.pdf
• Localization Manual.pdf
• Manual.pdf
• ORTS Trackviewer manual.pdf
• Processor Flow Chart.pdf
• timetable-editor_de.pdf
• timetable-editor_en.pdf

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

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.