Multiplayer first person shooter games for PC/Windows with 6-player support

Insurgency: Sandstorm

Players: 0 local, 8 online

Serious Sam 3: BFE

Players: 4 local, 16 online

Brink

Players: 0 local, 8 online

Counter-Strike Nexon: Zombies

Players: 0 local, 12 online

Call of Duty: Ghosts

Players: 0 local, 6 online

Overwatch 2

Players: 0 local, 6 online

Alien Dawn

Players: 0 local, 10 online

Mercenary Ops

Players: 0 local, 8 online

Strike Vector

Players: 0 local, 6 online

Day of Infamy

Players: 0 local, 8 online

Argo

Players: 0 local, 10 online

No More Room in Hell

Players: 0 local, 8 online

Containment Corps

Players: 0 local, 8 online

Time Warpers

Players: 0 local, 100 online

Strike Vector EX

Players: 0 local, 6 online

Brothers in Blood: WW2 Co-op

Players: 0 local, 8 online

GRAVEN

Players: 0 local, 8 online

Brutal Fate

Players: 0 local, 0 online

No More Room In Hell 2

Players: 0 local, 8 online

Blood: Fresh Supply

Players: 8 local, 8 online

Fossilfuel

Players: 0 local, 6 online

REKKR: Sunken Land

Players: 0 local, 8 online

Eradicator

Players: 0 local, 8 online

Fistful of Frags

Players: 0 local, 6 online

FireStarter

Players: 0 local, 8 online