Multiplayer action/adventure games with 4-player online support

A Valley Without Wind

Players: 16 local, 0 online

Voltron: Defender of the Universe

Players: 5 local, 360 online

CastleMiner Z

Players: 8 local, 0 online

Assassin's Creed Unity

Players: 4 local, 0 online

ToeJam and Earl: Back In The Groove

Players: 4 local, 0 online

ToeJam and Earl: Back In The Groove

Players: 4 local, 0 online

Watch Dogs: Legion

Players: 4 local, 0 online

Fable Heroes

Players: 4 local, 360 online

Assassin's Creed IV: Black Flag

Players: 4 local, 0 online

Assassin's Creed IV: Black Flag

Players: 4 local, 0 online

Super Dungeon Bros

Players: 4 local, 0 online

Watch_Dogs 2

Players: 4 local, 0 online

Alpha Squad

Players: 4 local, 0 online

Disney Infinity 2.0: Marvel Super Heroes

Players: 4 local, 0 online

Super Dungeon Bros

Players: 4 local, 0 online

Assassin's Creed Unity

Players: 4 local, 0 online

No Man's Sky

Players: 8 local, 0 online

Half Dead 2

Players: 16 local, 0 online

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

Players: 4 local, 0 online

Edge of Space

Players: 8 local, 0 online

We Need to Go Deeper

Players: 4 local, 0 online

Voltron: Defender of the Universe

Players: 5 local, 0 online

Disney Infinity

Players: 4 local, 0 online

Feel the Snow

Players: 4 local, 0 online

How to Survive 2

Players: 4 local, 0 online