Multiplayer first person shooter games for PC/Windows with local/couch support

LuPR: Lunar Post Recruit

Players: 4 local, 0 online

Quake (Enhanced)

Players: 4 local, 4 online

Left 4 Dead 2

Players: 2 local, 4 online

Left 4 Dead

Players: 2 local, 4 online

Serious Sam: The First Encounter

Players: 4 local, 16 online

Serious Sam 2

Players: 4 local, 6 online

Contagion

Players: 2 local, 8 online

Painkiller Hell & Damnation

Players: 2 local, 2 online

Gunscape

Players: 8 local, 8 online

RICO

Players: 2 local, 2 online

Serious Sam 3: BFE

Players: 4 local, 16 online

Signal Ops

Players: 3 local, 3 online

Call of Duty: Black Ops 3

Players: 2 local, 4 online

Call of Duty: WWII

Players: 2 local, 4 online

Killing, My Friend

Players: 4 local, 4 online

RICO: London

Players: 2 local, 2 online

DOOM (1993)

Players: 4 local, 0 online

Reload

Players: 4 local, 0 online

Space Beast Terror Fright

Players: 4 local, 4 online

Vertigo Remastered

Players: 2 local, 0 online

Jack Walker: Ethereal

Players: 2 local, 2 online

Stubbs The Zombie in Rebel Without a Pulse

Players: 2 local, 0 online

Blood: Fresh Supply

Players: 8 local, 8 online

Chains of Fury

Players: 2 local, 0 online

Chex Quest HD

Players: 4 local, 0 online