I threw together a quick blockout composition in blender just to try out some new stuff based on a concept I saw the other day. I only had like 2 hours to spare today so I decided to this instead of more work on the UE4 scene. Changed a few stuff from the concept for easier proportions. It started out as a composition workout but once I started on the shack stuff became a bit more involved so I changed the structures to make it more fun to model in future. Mountain silhouette needs tweaking, it's basically just blocks with displacement on them, tunnel needs tweaking (lowering it for better readability). Sadly I don't know who made the concept (plz, let me know if you find out). I might push this further once I'm done with my UE4 environment. EDIT: Thanks to https://www.artstation.com/marcodivita who found out which studio made it. www.playdead.com! Can't wait to play this game in the future, I really loved Inside.
Concept not done by me (plz, let me know who made it in the comments)