I've been working hard on the train update and I've managed to get a Linux build working.
The Windows and MacOS builds have also gotten a bit of a touch up.

• Made the rooftop area a bit more inviting
• Made the lighting fancier in the HTube System's lever room
• Restricted the time to fade out when going through doors to 1 second
  this will hopefully stop the world from breaking on slower computers
• Added a new secret, somewhere

And here's some of what I've done for the train update

• Created the scripts for a train, an updated kill zone, an updated trigger zone and inter-scene train management
• Created the base train model
• Created a lot of assets for the train tubes
• Finished the "Train Tube 1" scene

Have fun and thanks for playing!