Multiplayer action games for PC/Windows with 4-player local/couch support

Flat Heroes

Players: 4 local, 0 online

Death Road to Canada

Players: 4 local, 0 online

Yet Another Zombie Defense HD

Players: 4 local, 4 online

Totally Reliable Delivery Service

Players: 4 local, 4 online

MADNESS: Project Nexus

Players: 4 local, 0 online

xDasher

Players: 4 local, 0 online

Terror of Hemasaurus

Players: 4 local, 0 online

Get Packed: Fully Loaded

Players: 4 local, 4 online

Clonk Rage

Players: 4 local, 12 online

Wee Tanks!

Players: 4 local, 0 online

OrbWars

Players: 4 local, 4 online

Abathor

Players: 4 local, 0 online

Vampire Survivors

Players: 4 local, 0 online

Rogue Glitch Ultra

Players: 4 local, 4 online

Gang Beasts

Players: 4 local, 8 online

Lara Croft and the Temple of Osiris

Players: 4 local, 4 online

Superfighters Deluxe

Players: 4 local, 4 online

Lovers in a Dangerous Spacetime

Players: 4 local, 0 online

TowerFall Ascension

Players: 4 local, 0 online

Nine Parchments

Players: 4 local, 4 online

Corgi Warlock

Players: 4 local, 0 online

Monaco: What's Yours is Mine

Players: 4 local, 4 online

Unrailed!

Players: 4 local, 4 online

Think of the Children

Players: 4 local, 0 online

Raiders of the Lost Island

Players: 4 local, 0 online