This is based on opinion. Please don't list it on a work's trope example list.
Nightmare Fuel / The Order: 1886
After the initial more action-packed trailers and walkthroughs that introduced us to the game, as of E3 2014 we finally see a "half-breed" in action for the first time, and let's just say the mood of the game quickly turns....
What does it say when the werewolf in this case, up until being discovered by Gallahad (the player character) is eagerly chowing down on a fresh human corpse....while NOT transformed?
The Bobby Paige trailer, in which a boy stays out too late, gets bitten by a werewolf off-screen, and when night falls again, he transforms and violently murders his parents, all shown in black and white silhouettes and told in rhyme.