You really have to play the 2 best exclusives of the console, really
- Bloodborne
- TLOUR
As usual look at the metacritic PS4 page, always interesting to look at, particularly the >85 rated games, it's easy, the first 5 games are: GTA5, TLOUR, Journey, Bloodborne and The Witcher 3:
http://www.metacritic.com/browse/games/score/metascore/all/ps4?sort=desc