Multiplayer games for PC/Windows with 4-player local/couch support

Insania

Players: 4 local, 4 online

Soul Searching

Players: 4 local, 0 online

Wreckin' Ball Adventure

Players: 4 local, 0 online

Scott Pilgrim Vs. The World: The Game Complete Edition

Players: 4 local, 4 online

Josh Journey: Darkness Totems

Players: 4 local, 0 online

What The Fork

Players: 4 local, 0 online

Little Adventures

Players: 4 local, 0 online

Hive Jump

Players: 4 local, 0 online

Innchanted

Players: 4 local, 4 online

Healing Spree

Players: 4 local, 0 online

Camped Out!

Players: 4 local, 0 online

B.Ark

Players: 4 local, 0 online

GONNER2

Players: 4 local, 0 online

HordeCore

Players: 4 local, 4 online

HordeCore: Training Ground

Players: 4 local, 0 online

Doom & Destiny Worlds

Players: 4 local, 0 online

Golden Axed: A Cancelled Prototype

Players: 4 local, 0 online

Push Your Family

Players: 4 local, 4 online

Shakes on a Plane

Players: 4 local, 0 online

Debugger 3.16 // Recoded // Despair of the Developer Edition

Players: 4 local, 0 online

Debugger // Recoded

Players: 4 local, 0 online

Vectronom

Players: 4 local, 0 online

BH Trials

Players: 4 local, 0 online

Ragtag Adventurers

Players: 4 local, 4 online

Super Star Blast

Players: 4 local, 0 online