For a long time, the demo version of VoidTrain had an outdated build because our small team was fully occupied with the main version of the game. It contained long-fixed bugs and lacked the changes we introduced through updates after the Steam release.
Finally, we've found the opportunity to address this, and the demo version has been updated and is now available on the game's Steam page.
If you decide to play the full version of the game after playing the demo version, you will be able to continue the progress you made in the demo version. In this case, it's better to uninstall the demo version to avoid any conflicts between the demo and full versions in Steam (Save files will not be deleted and will be accessible).
Thank you very much for playing VoidTrain and providing feedback!