Multiplayer action/adventure games for PC/Windows with 4-player online support

Assassin's Creed Unity

Players: 0 local, 4 online

Half Dead 2

Players: 0 local, 16 online

Adventure Time: Explore the Dungeon Because I DON’T KNOW!

Players: 0 local, 4 online

Edge of Space

Players: 0 local, 8 online

We Need to Go Deeper

Players: 0 local, 4 online

Feel the Snow

Players: 0 local, 4 online

Warman

Players: 0 local, 8 online

Vulpine

Players: 0 local, 4 online

Trash

Players: 0 local, 4 online

Prevent The Fall

Players: 0 local, 4 online

Bean Stalker

Players: 0 local, 4 online

SourceWorlds

Players: 0 local, 4 online

Fegefeuer Soul Tower

Players: 0 local, 4 online

Oppidum

Players: 0 local, 4 online

Eden Rising

Players: 0 local, 8 online

Downward Spiral: Horus Station

Players: 0 local, 8 online

Soundfall

Players: 4 local, 4 online

Windlands 2

Players: 0 local, 4 online

The Mound: Omen of Cthulhu

Players: 0 local, 4 online

The Survivalists

Players: 0 local, 4 online

Tribes of Midgard

Players: 0 local, 10 online

Half Dead

Players: 0 local, 8 online

Crystal Raiders VR

Players: 0 local, 4 online

Those Who Came: Healing Solarus

Players: 0 local, 4 online

Cave Digger 2: Dig Harder

Players: 0 local, 4 online