Era: Survival Colony - A co-op card game for 1-4 players by Shades of Vengeance — Kickstarter

4 Player Co-op Games - Giant Bomb

Outward 4 player Local Splitscreen Co-op. : r/localmultiplayergames

Co-Optimus - News - Mayhem Brawler Gets New Character, 4-Player Co-op, and Special Edition iiRcade Cabinet

Stardew Valley 4 players Local Co-op. : r/localmultiplayergames

Minecraft 4-Player Coop on one PC, 60fps. : r/localmultiplayergames

Gambit Is A 4 Player Co-Op Shooter From The Developers Of Zero Caliber

Dragon Quest Heroes II's Multiplayer Will Allow For 4-Player Co-op - Siliconera

Gotham Knights Team Explains Why They Chose 2-Player Over 4-Player Co-Op

Team up with friends to slay hordes of aliens in the 4-player co-op top-down shooter Killsquad — Analog Stick Gaming

Four-player co-op beat 'em up game Jitsu Squad heading to Switch