Absolutely amazing game, 5/5. If anything, the only complaint I can make is the repetition of the bible riddle, once for peter's computer, and then for one of the six computers to be powered on.
Ok, probably someone mentioned it before, but:
I have bought stack bonus, but it's only useful in maps with boosts allowed. But playing on this maps require using boosts (and buying them) or you screwed. So my point is that if I want to use my stack bonus, I have to spend money/shards on boosts... There is no third option...