I'm sure, as usual, I'll be the odd man out on this, but Lies of P is my pick, as it's easily my game of the year. Bloodborne was my first "Souls" game, and Lies of P gave me something I've wanted for the better part of a decade now: a sequel to Bloodborne, albeit in a spiritual sense only. But more than that, I think it improves on the Souls formula in fundamental ways, such as...
- making strategic guarding such an integral part of the strategy.
- the unique weapon customization system that lets you mix and match weapon parts to create the perfect weapon for your build.
- placing bloodstains from boss fights outside the boss wall so you not only aren't locked into the fight in order to keep your XP, but also makes it so you don't have to waste the start of every fight running over to get your Souls back.
- allowing the player to repair their weapon on the fly for free, so you don't have to constantly teleport back to repair it at a vendor.
- giving the player flexibility over buffing or healing AI Summons.
- and marking quests on the fast travel screen so you know when you have business to advance.
This game kinda revitalized my interest in the genre, as after completing it I finally went back and finished Demon's Souls, Dark Souls 2, and now Dark Souls 3 as of last night. It's just a superbly-made game from a small developer that completely nails that fierce combat, moody atmosphere, and rewarding exploration these games are known for. The story is also shockingly easy to follow for a game like this, as it doesn't dump its entire storytelling into item descriptions. And let's just say that Pinnochio isn't the only piece of classic literature that the game borrows from.