Games like Earth Marines
Games like Earth Marines include Hotline Miami, Left 4 Dead 2, 12 is Better Than 6, Pavlov, and Call of Duty®. We matched them by the tags players give Earth Marines on Steam (Action, Adventure, Shooter, 2D, and Top-Down): closest matches first, and among equally close ones the better-known games.

Hotline Miami
Shared: Action · Top-Down · Violent

Left 4 Dead 2
Shared: Shooter · Action · Zombies

12 is Better Than 6
Shared: Action · Shooter · 2D

Pavlov
Shared: Shooter · Action · Military

Call of Duty®
Shared: Shooter · Action · Military

Zombotron
Shared: Action · Adventure · 2D

My Friend Pedro
Shared: Action · Shooter · Indie

DOOM Eternal
Shared: Action · Shooter · Gore

Call of Duty®: Black Ops III
Shared: Action · Shooter · Zombies

Hotline Miami 2: Wrong Number
Shared: Action · Top-Down · Gore

The Walking Dead: Saints & Sinners
Shared: Action · Adventure · Shooter

BioShock Infinite
Shared: Action · Shooter · Adventure

Gears 5
Shared: Action · Adventure · Shooter

Serious Sam 4
Shared: Action · Shooter · Adventure

Escape From Duckov
Shared: Action · Adventure · Shooter

The Last Stand Legacy Collection
Shared: Action · Adventure · Zombies

Grand Theft Auto V Legacy
Shared: Action · Shooter · Adventure

Back 4 Blood
Shared: Shooter · Action · Zombies

Broforce
Shared: Action · 2D · Shooter

Call of Duty®: Black Ops
Shared: Action · Shooter · Zombies

CARRION
Shared: Action · 2D · Gore

The Last Stand: Aftermath
Shared: Shooter · Zombies · Adventure

Guns, Gore and Cannoli 2
Shared: Action · 2D · Shooter

Red Dead Redemption 2
Shared: Adventure · Action · Shooter