I had a really good time with this one. Well done! Great concept, great aesthetics, great music. Maybe the bunker is a bit underwhelming, it's usually not worth the investment because the bunker chain loses value pretty quickly (or maybe I still have to learn to play properly). Anyway, wonderful game. 
Viewing post in Podvodsk (Ludum Dare 57) comments
Yeah, the bunker almost feels like a noob trap because it rarely pays off big to invest in it. I've had a few good chains going off of it but it's really lucky if investing in bunkers pays off or not as far as I can tell.
One thing that helps is not to bury them in the ground too much though since at least you can profit from putting habitats against them which you can't do if they're isolated in the ground.