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

Bulletstorm

Players: 0 local, 4 online

Alien Breed 2: Assault

Players: 0 local, 2 online

Front Mission Evolved

Players: 0 local, 2 online

Sanctum

Players: 0 local, 4 online

Assassin's Creed Unity

Players: 0 local, 4 online

Overlord II

Players: 2 local, 2 online

Jane's Advance Strike Fighters

Players: 0 local, 4 online

Saints Row: Gat out of Hell

Players: 0 local, 2 online

Civilization V

Players: 3 local, 3 online

Shoot Many Robots

Players: 0 local, 4 online

Two Worlds

Players: 0 local, 8 online

Bloons TD 5

Players: 0 local, 2 online

Prison Architect

Players: 0 local, 8 online

Diablo III

Players: 0 local, 4 online

Bunch of Heroes

Players: 0 local, 4 online

Hoard

Players: 0 local, 4 online

Section 8: Prejudice

Players: 0 local, 4 online

Alien Breed 3: Descent

Players: 0 local, 2 online

Impire

Players: 0 local, 4 online

Call of Duty: Infinite Warfare

Players: 0 local, 4 online

PAYDAY 3

Players: 0 local, 4 online

Dying Light 2 Stay Human

Players: 0 local, 4 online

Overwatch 2

Players: 0 local, 6 online

Red Orchestra 2: Heroes of Stalingrad

Players: 0 local, 4 online

ProtoGalaxy

Players: 4 local, 4 online