Bloodborne, Samurai Warriors, Dynasty Warriors, better versions of Terraria, How to Survive, The Last of Us, Tomb Raider, Alien Isolation. There's FFT-0, with FFXV and KH3 on the horizon. My girlfriend has played through the PS4 version of Dragon Age: Inquisition multiple times, and owns the PS3 version as well. And there are multiple worthwhile enhancements to it, but most notably it is a lot less buggy and didn't freeze on her the way the PS3 version did

It's a hefty price of entry, but we've found it to be very worth it. Though it helps that there were two people opting for the console, and we kind of put it on lay-away, rather than pay outright for it. But it was worth it for us