I played Fallout Shelter, so I am a pro, you know :D It's a little bit tricky to get to know how this games work, but after some time, you grasp the different dependencies, like the CORE system for assigning. I had one stuff member bugged in the elevator and I couldn't move him anywhere, but regardless I managed to built a pretty big shelter and had fun! Also nice there are upgrades for room. Visually, I rather thought the "scientists" are some skaters (maybe because are were angry, for the reason xD) but when you zoom in (which works smoothly!) I can agree they are some scientist indeed. Rooms are nice, with very small details in a nice low-poly manner and it's so nice this is 3D, works very well and is very well executed ;)