Steam Curator: 4 Player Co-op Games

Co-op games that support 4 or more players

Roguevive: Prelude : Online Co-op Campaign ~ Stage 1 Full Gameplay Walkthrough

Steam Curator: More Than 4 Local Multiplayer

Steam Curator: 4 Player Co-op Games

Steam Curator: Games for Lovers

DwarfHeim (Early Access) [Online Co-op] : Co-op Mode ~ Survival Mode - Medium (Full Run)

Steam Curator: More Than 4 Local Multiplayer

Local co-op game list (Need suggestions!) : r/localmultiplayergames

Steam Curator: Co-Optimus

Steam Curator: SvenEvils Playground