Multiplayer games for PC/Windows with 4-player online support

Quake

Players: 0 local, 16 online

Star Ruler

Players: 0 local, 11 online

FORCED

Players: 4 local, 4 online

Shadow Warrior 2

Players: 0 local, 4 online

AI War: Fleet Command

Players: 0 local, 8 online

Vampire: The Masquerade - Redemption

Players: 0 local, 4 online

Serious Sam: The Second Encounter

Players: 0 local, 16 online

Ready Or Not

Players: 0 local, 5 online

Men of War: Assault Squad 2

Players: 0 local, 8 online

PAYDAY 2

Players: 0 local, 4 online

Magicka

Players: 4 local, 4 online

Sins of a Solar Empire

Players: 0 local, 4 online

Renegade Ops

Players: 2 local, 4 online

Terrorhedron: 3D Co-Op Tower Defense

Players: 0 local, 8 online

The Elder Scrolls Online

Players: 0 local, 4 online

One-armed cook

Players: 0 local, 4 online

Out of Space

Players: 4 local, 4 online

Warhammer 40,000: Darktide

Players: 0 local, 4 online

ArmA II

Players: 0 local, 4 online

Close Combat: First to Fight

Players: 0 local, 4 online

Company of Heroes: Tales of Valor

Players: 0 local, 4 online

Contagion

Players: 2 local, 8 online

Sniper Elite 4

Players: 0 local, 4 online

Killing Floor

Players: 0 local, 6 online

The Incredible Adventures of Van Helsing

Players: 0 local, 4 online