Multiplayer action/adventure games with 4-player online support

Necropolis

Players: 4 local, 0 online

Terraria

Players: 8 local, 0 online

Terraria

Players: 8 local, 0 online

Terraria

Players: 8 local, 0 online

ToeJam and Earl: Back In The Groove

Players: 4 local, 0 online

Prevent The Fall

Players: 4 local, 0 online

Portal Knights

Players: 4 local, 0 online

Eden Rising

Players: 8 local, 0 online

Risk of Rain

Players: 4 local, 0 online

Risk of Rain

Players: 4 local, 0 online

Downward Spiral: Horus Station

Players: 8 local, 0 online

Downward Spiral: Horus Station

Players: 8 local, 0 online

Soundfall

Players: 4 local, 0 online

Soundfall

Players: 4 local, 0 online

Soundfall

Players: 4 local, 0 online

Soundfall

Players: 4 local, 0 online

Sea of Thieves

Players: 4 local, 0 online

Conan Chop Chop

Players: 4 local, 0 online

Conan Chop Chop

Players: 4 local, 0 online

Conan Chop Chop

Players: 4 local, 0 online

Watch Dogs: Legion

Players: 4 local, 0 online

Don't Starve Together

Players: 6 local, 0 online

The Survivalists

Players: 4 local, 0 online

The Survivalists

Players: 4 local, 0 online

Tribes of Midgard

Players: 10 local, 0 online