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

Teenage Mutant Ninja Turtles: Shredder's Revenge

Players: 6 local, 6 online

River City Girls 2

Players: 4 local, 4 online

Full Metal Furies

Players: 4 local, 4 online

Unending Dusk

Players: 0 local, 4 online

Castle Crashers

Players: 4 local, 4 online

Cobalt

Players: 2 local, 8 online

Bravery and Greed

Players: 4 local, 4 online

Dungeons & Dragons: Chronicles of Mystara

Players: 4 local, 4 online

River City Ransom: Underground

Players: 4 local, 4 online

Capcom Beat 'Em Up Bundle

Players: 4 local, 4 online

Zombie Vikings

Players: 4 local, 4 online

Elsword

Players: 0 local, 4 online

Usurpator

Players: 0 local, 8 online

Maximus 2: Street Gladiators

Players: 4 local, 4 online

Code of Princess

Players: 0 local, 4 online

Bloody Zombies

Players: 4 local, 4 online

Phantom Breaker: Battle Grounds Ultimate

Players: 4 local, 4 online

Shing!

Players: 4 local, 4 online

Clan N

Players: 4 local, 4 online

Scott Pilgrim Vs. The World: The Game Complete Edition

Players: 4 local, 4 online

Code of Princess EX

Players: 2 local, 4 online

99Vidas

Players: 4 local, 4 online

Axe Gang

Players: 0 local, 4 online

Charlie Murder

Players: 4 local, 4 online

Mad Streets

Players: 4 local, 4 online