Being the good guy in gaming has been a long trope, dating back to the beginnings of the medium. It was a game that promised you could be good or evil, and it would change the world around you. But if you feed, the plague spreads, the districts get more dangerous, everything in the game world seems to get darker and more oppressive. The bad path, though, takes you to some insane places that other games just don't really go for. You can't be bad freely here, because the game world remembers, and it's a fascinating thing to see how it actually ends up playing out.