Co-op is making a comeback!
Playing right now:
- Helldivers 2
- Hunt: Showdown
Ideas based on games you mentioned:
- Divinity 2
- Remnant
- Wasteland 3
- Crayta
- Medieval Dynasty (haven't actually tried coop on this yet, but single player was great)
Interesting team dynamics:
- Deep Rock Galactic
- Lethal Company
- Rimworld (Coop is wild)
- Aliens: Fireteam Elite
Surprisingly Engaging:
- Journey to the Savage Planet
- Golf with Friends
Nintendo:
- Donkey Kong Country 1, 2, and 3
- Contra / Contra 3 (I think there is a new one coming)
- TMNT Turtles in Time (There is a new TMNT already out too)
- Bubble Bobble
Keep coming back to it:
- StarCraft II Coop (free to play now)
- Diablo II Resurrected (still better than III/IV/Last Epoch/Grimm Dawn etc.)
- Portal 2 (lots of challenges to complete)
They want to start charging for the malware they host.