Multiplayer games for PC/Windows with 4-player support

Yet Another Zombie Defense HD

Players: 4 local, 4 online

Warhammer 40,000: Gladius – Relics of War

Players: 0 local, 6 online

PlateUp!

Players: 4 local, 4 online

Naruto to Boruto: Shinobi Striker

Players: 0 local, 4 online

GOD EATER 3

Players: 0 local, 8 online

Rec Room

Players: 0 local, 4 online

Earth Defense Force 4.1: The Shadow of New Despair

Players: 2 local, 4 online

Netherspace 2

Players: 4 local, 0 online

HYPERCHARGE: Unboxed

Players: 4 local, 4 online

Wee Tanks!

Players: 4 local, 0 online

Steel Division 2

Players: 0 local, 5 online

Borderlands: Game of the Year Edition

Players: 0 local, 4 online

Red Solstice 2: Survivors

Players: 0 local, 8 online

Levelhead

Players: 4 local, 0 online

Conan Chop Chop

Players: 4 local, 4 online

Zombie Army 4: Dead War

Players: 0 local, 4 online

Plants vs Zombies: Battle for Neighborville

Players: 0 local, 4 online

Sons Of The Forest

Players: 0 local, 8 online

The Outlast Trials

Players: 0 local, 4 online

LuPR: Lunar Post Recruit

Players: 4 local, 0 online

Baldur's Gate III

Players: 2 local, 4 online

Fort Triumph

Players: 4 local, 0 online

Volcanoids

Players: 0 local, 4 online

Devour

Players: 0 local, 4 online

Smithworks

Players: 0 local, 4 online