Multiplayer action games with 4-player online support

The Expendables 2

Players: 4 local, 0 online

Metal Gear Survive

Players: 4 local, 0 online

Zombie Wranglers

Players: 4 local, 360 online

Dawnstar

Players: 4 local, 0 online

NeverDead

Players: 4 local, 360 online

Star Trek: D-A-C

Players: 6 local, 0 online

Minecraft Legends

Players: 4 local, 0 online

Teenage Mutant Ninja Turtles: Mutants in Manhattan

Players: 4 local, 0 online

Dead Rising 4

Players: 4 local, 0 online

Genetic Disaster

Players: 4 local, 0 online

Minecraft Legends

Players: 4 local, 0 online

SpiderHeck

Players: 4 local, 0 online

Soul Sacrifice Delta

Players: 4 local, 0 online

Probably Archery

Players: 5 local, 0 online

Knight Squad

Players: 8 local, 0 online

Earth Defense Force 2: Invaders from Planet Space

Players: 4 local, 0 online

The Forgettable Dungeon

Players: 4 local, 0 online

Drunk-Fu: Wasted Master

Players: 8 local, 0 online

Geneshift

Players: 4 local, 0 online

MORDHAU

Players: 6 local, 0 online

Knight Squad

Players: 8 local, 0 online

Totally Reliable Delivery Service

Players: 4 local, 0 online

GIBZ

Players: 4 local, 0 online

Unrailed!

Players: 4 local, 0 online

Insania

Players: 4 local, 0 online