Co-op Games:

Portal 2

A way out

It takes two

Operation: Tango

We Were Here Too

Pico Park

Lovers in a dangerous space time

Don’t Starve Together

Two Brothers

Death stranding

https://burymemylove.arte.tv/

https://www.ea.com/games/unravel/unravel-two/overview

https://picoparkgame.com/en/

Games with co-op aspects:

Journey

Sky: Children of the Light

Death Stranding (social strand)

Soulsborne