I am an extremely harsh critic when it comes to these things. High scores are an achievement; 8's are very good, 9's are exceptional and 10 out of 10s almost impossible. I would only score my favorite game of all-time a perfect 10.
So by that, there hasn't been any game this generation that would get the score, or even near it, and neither has there been in the last.
The best games to me this generation have been Resident Evil Revelations, Luigi's Mansion 2 and Super Mario 3D Land. None of those rank as high as my favorites from last generation though, but they would be solid 8-8.5's to me. Uncharted 4 is probably also one of the best earning a similar score, though I personally expected a bit more from it and was subsequently let down a tiny bit. Maybe me expectations were too high, who knows. I actually had more "fun" with Tomb Raider, so maybe I should consider that one for a nice score as well.
Anyway I should play Bloodborne considering the praise it gets from pretty much everyone here. 







