Resident Evil 5 I think. Dead Nation, Rayman Legends.
Helldivers is pretty fun.
I tried RE5 co-op and it was a chore because I can't stand the RE control scheme, but I know it's one of the best co-op games according to many.
How To Survive was a decent one. Diablo 3, Borderlands (my favorite couch co-op game) and Sacred 2 are ones I can think of ATM that I've played. Divinity is pretty decent too - just a bit too deep and frustrating for me.
Check Co-Optimus, you can get the entire list.
http://www.co-optimus.com/system/22/playstation-4.html
If you enjoy shouting and stressing out at your friends then Overcooked is pretty good.
Any good FPS co-op games for PS4?
I saw someone mention boarderlands. I just googled it... graphics look a little sloppy for a ps4 game. So I am a bit skeptical.
a bit outdated but I assure you the game is mad fun...
true true.
Have you tried Ghost Recon Wildlands or Far Cry 5?
Or what about Monster Hunter?
Is Far Cry 5 co-op? I haven't played GRW and FC5. I don't play those series but always wanted to try FC.
I play Monster Hunter but still a month or two ago. Reach past level 100 and then got bored and dropped it. I may try it again. It's online co-op though. Its fun for a while but very very grindy. Best enjoyed with a group of friends.