Bloodborne
There's no games out there right now quite like Demon's Souls and the Dark Souls games. These action RPGs by From Software are brutally difficult, dark and slow-paced and their stories leave a lot of room for interpretation, being mainly told through item descriptions, random NPC dialogue and the like.
Bloodborne looks like the next step in the evolution of their very special sort of gameplay, now with dashing instead of shields, the ability to use firearms, blood instead of souls and a Gothic, Victorian London-inspired setting. From Software are intentionally keeping everyone in the dark about this game, but that just makes us all the more excited. Bloodborne is out on PS4 in March 2015.