Bioshock
Reason:
Bioshock combines a perfect amount of cute kiddy things such as carnival's clown via the vending machine. A spanish ammo vending machine, cute 'little sisters' and sweet fluff. Yet have horrifying pictures such as crossbow bolt remaining intact between the eyes of a splicer, big daddys with blood on their drills, terrifying background screaming, horribly mutilated bodies.
Storyline shows how a city that is run by pure greed can create technological advancements beyond ones imagination, but is far too unstable and crashed and became a terrible place.
Spoilers, No seriously, its like the entire plot, so dont read if you dont wish to know anything. Im not kidding its almost everything.
It is a story where the main protaganist, Jack, is under control of a mental control plasmid and hijacks a plane and crash's it in order to fufill a command by Fontaine, who only needs to say "Would you kindly" to activate the mental control plasmid. Eventually Tenebaum fixes most of the mental control plasmid, however Fontaine can mutter "Code yellow" which commands your brain to slowly stop your heart. You eventually escape this with dose's from Lot 192 and manage to find and kill Fontaine. The ending is decided by saving or harvesting (Which kills them) the little sisters. Harvesting shows a greed and bad ending. Saving is selfless and kind and the good and fluffy ending.