Multiplayer games for PC/Windows with 2-player online support

Tom Clancy's HAWX

Players: 0 local, 4 online

Killing Floor (MOD)

Players: 0 local, 6 online

Dungeon Siege II

Players: 0 local, 8 online

Sacred 2: Fallen Angel

Players: 0 local, 4 online

Call of Duty: World at War

Players: 0 local, 4 online

Alien Swarm (MOD)

Players: 0 local, 4 online

Starlancer

Players: 0 local, 4 online

Soldiers: Heroes of World War II

Players: 0 local, 4 online

Codename: Outbreak

Players: 0 local, 2 online

Worms Revolution

Players: 2 local, 2 online

Awesomenauts

Players: 3 local, 3 online

Lost Crypts

Players: 0 local, 4 online

Metal Slug X

Players: 2 local, 2 online

Rampage Knights

Players: 2 local, 2 online

Drox Operative

Players: 0 local, 4 online

Cobalt

Players: 2 local, 8 online

Krater

Players: 0 local, 2 online

Young Justice: Legacy

Players: 3 local, 3 online

Quest Hunter

Players: 4 local, 4 online

ORION: Prelude

Players: 0 local, 5 online

PixelJunk Monsters 2

Players: 2 local, 4 online

The Goatman

Players: 0 local, 3 online

Final Exam

Players: 2 local, 4 online

Divinity: Dragon Commander

Players: 0 local, 2 online

Earth Defense Force 5

Players: 2 local, 4 online