Congratz on the great GMTK ranking!!! Very nice improvements on the game's overall quality. The tutorial is also well-made.
My suggestions, if you are planning to work on it more:
- Increase the shadow draw distance of the webgl build. I think you need to change the default quality settings.
- More reasons to use the elevation change. For example: much longer trains and rivers.
- Collectible bonuses (more cars, a time-limited speed increase,...), that are not on the direct path to the objective. This forces the player to constantly make risk-reward decisions.