Multiplayer action/adventure games for PC/Windows with 2-player online support

Journey to the Savage Planet

Players: 0 local, 2 online

Conan Chop Chop

Players: 4 local, 4 online

Void Crew

Players: 0 local, 4 online

Cave Crawlers

Players: 0 local, 10 online

It Takes Two

Players: 2 local, 2 online

Risk of Rain

Players: 4 local, 4 online

Sea of Thieves

Players: 0 local, 4 online

Son of Nor

Players: 2 local, 4 online

Don't Starve Together

Players: 0 local, 6 online

Terraria

Players: 0 local, 8 online

Super Dungeon Bros

Players: 4 local, 4 online

Windward

Players: 0 local, 4 online

Portal Knights

Players: 2 local, 4 online

The Wild Eight

Players: 0 local, 8 online

No Man's Sky

Players: 0 local, 32 online

Half Dead 3

Players: 2 local, 4 online

Salt and Sacrifice

Players: 2 local, 2 online

Necropolis

Players: 0 local, 4 online

Saints Row IV

Players: 0 local, 2 online

The Binding of Isaac: Rebirth

Players: 2 local, 4 online

How to Survive 2

Players: 4 local, 4 online

How to Survive

Players: 2 local, 2 online

Abyss Odyssey

Players: 2 local, 2 online

Darksiders Genesis

Players: 2 local, 2 online

The Cursed Crusade

Players: 2 local, 2 online