I really want to continue to like this game, but it's getting tired. Catherine's adorable ruthlessness is a big plus, but it can only stretch so far. Ultimately, content is limited to buying invisible masses of buildings, conquering the same static continent over and over, and buying production speed upgrades. Since the game's whole focus is conquering, such a simplistic battle and conquer system needs to be the main focus of some very near future updates.
Unfortunately, new game + doesn't reset the amount needed to unlock a new soul, therefore, despite Killzerz44's suggestion, you shouldn't bother resetting your game too much. First reset should be for the sands of time for one soul, after that don't bother resetting until you have 12 souls total, 1 for sands of time, 10 for an extra slot, and one for hero killer.
This game seems broken, at least on my computer. It seems to start normally, and as soon as i click any button, every number turns to NAN and all progress stops there. A completely broken game.
I might try to make a small patch to see if it'll fix this. But not too much effort with be going in to fix THIS version.