Vampyr is an upcoming action rpg coming to PS4, Xbox One, and PC from the people behind Life Is Strange, DontNod. During E3, I attended a theatre demo where the team showed off some of the key features of the game.
Set in 1918 London, you play as a doctor recently turned into a vampire during the height of the Spanish Flu epidemic. Therein lies the conflict: as a doctor, you're sworn to help the people around you; as a vampire, you gain great amounts of experience by feeding on them. But you're not completely without help as to what to decide to do.
As you talk to citizens, do quests for them, and get more info about the world around you, you'll unlock bits of info about everyone. This information is presented in a menu to help make it easier for you to figure out if sacrificing a particular person is a good thing, a bad thing, or simply so tempting that it doesn't matter.
You see, while it's easy to justify sucking the blood of bad people, good people have higher quality blood and thus are worth much more experience. Once you've chosen your victims and drained out their blood, you can rest in a hideout to spend that experience in skill trees; your choice of skills can drastically alter how you play the game.
But be warned, for there are consequences to your actions; the more you feed on people, the more it disrupts the economy, encourages the spread of disease, and lowers the overall blood quality of the remaining people in that area. Continue to drive down an area, and it will be essentially destroyed, eliminating all the folks within along with their quests.
The game is currently on track for a late 2017 release and will challenge players to retain their humanity in the ages of vampirism and corruption.