Any Coop modes/maps

Hey guys, I just wanna coop with my friend in some maps, are there any for Gmod?


(User was banned for this post ("Didn't search; wrong forum" - mahalis))

There are gamemodes like the HL2 campaign. Not sure if it still works now but it was a fun gamemode when played with the right people.

(User was banned for this post (“Didn’t search; wrong forum” - mahalis))

Ok, it may be in the wrong section, but I did search. But as I couldn´t find anything I asked here. Tried HL2 Campaign already and didnt like it, alot of bugs. Any inovative game mode ?