Have a look into Project Ceres, my second Video Game I worked on. (around 2017 - 2018)
You can play the Game here:
https://sburckhardt.itch.io/project-c...
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You find yourself in the underground after you flee from a catastrophe. Now you want to reach the surface!
Travel from trainstation to trainstation and discover the world underneath. There are many helpful people that can help you.
Have fun!
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Please have in mind that the game is not finished. Sadly I can't finish it at the moment because I can't acess the Hard Disc of this Unity Project anymore.