Steam Workshop::4 Player Co-op

Oficina Steam: BattleBlock Theater. These are the story levels created by The Behemoth, re-created in an arena playlist so they can be played co-optionally with 2 - 4 players. Keep in mind that these levels were designed for 2 players.

A quick look at Warhammer 40,000: Rogue Trader's six player co-op

Steam Workshop::True Co-op Treasure Rooms

Save 60% on Bubble Bobble 4 Friends: The Baron's Workshop on Steam

Steam Workshop::Co-op Boss Items

Save 20% on Void Crew on Steam

Best 4 Player Couch Coop Games For The Steam Deck

Steam Workshop::Story Chapter 4 [4 player Co-op]

We Were Here on Steam

The 25 best co-op games on PC

Steam Workshop::Stick Together Co-Op

Dungeon Defenders on Steam