Since there's no scoring system, it's not really clear how the game scales in the later regions. I've played for about 2 and a half days I think, and I've gotten just under 1400 angel investors (AI), but getting oil to 200 is pretty hard still, I'll need lots more AI to get there I think.
This game would benefit from further expansion in the later stages, which become less strategic and more just a waiting game. Good work overall though! I really like the achievement system especially.
Excellent game! Its the only spot the difference game I've ever completed, because usually i get bored, but this one was great. I actually want to live in the little house at the top of the tree on page 10... Its so beautiful!