Sony truly kills it on the exclusive front. While we can debate which one you or I love, it's just an amazing breadth of fantastic games. I plat'd everything from Bloodborne through TLOU [twice!] through all the Uncharteds and Infamous's, and I honestly couldn't tell you my favorite. Maybe Bloodborne [well, Demon's]? TLOU because I still play MP every night? Uncharted 1 for fun factor? Uncharted Lost Legacy because it's currently blowing my mind?
I don't know. Anyway, point is, my vote goes to Tokyo Jungle.
Was actually just coming to type something similar lol. I didn't buy my PS4 for any one exclusive it was more just the wide variety of exclusives. Granted I bought my PS4 last year at black friday so it's a very different situation for me compared to someone that bought it before the library really developed. But my main point is there are so many awesome exclusives I finally felt like I had to get one.