Games like GAT RAT
Games like GAT RAT include Huntdown, METAL SLUG, METAL SLUG 3, Broforce, and Kero Blaster. We matched them by the tags players give GAT RAT on Steam (Action, Shooter, Side Scroller, Arcade, and Shoot 'Em Up): closest matches first, and among equally close ones the better-known games.
Huntdown
Shared: Shooter · Side Scroller · Action
METAL SLUG
Shared: Action · Arcade · Side Scroller
METAL SLUG 3
Shared: Action · Arcade · Side Scroller
Broforce
Shared: Action · Shooter · Platformer
Kero Blaster
Shared: Side Scroller · Shooter · Shoot 'Em Up
Contra: Operation Galuga
Shared: Action · Shooter · Arcade
Blazing Chrome
Shared: Action · Side Scroller · Shoot 'Em Up
Soda Crisis
Shared: Action · Side Scroller · Shooter
Terminator 2D: NO FATE
Shared: Side Scroller · Action · Arcade
METAL SLUG X
Shared: Action · Arcade · Shoot 'Em Up
Alex Jones: NWO Wars
Shared: Action · Shooter · Arcade
METAL SLUG 2
Shared: Action · Arcade · Side Scroller
Contra Anniversary Collection
Shared: Action · Side Scroller · Shooter
BioShock Infinite
Shared: Action · Shooter · Fantasy
HELLDIVERS™ 2
Shared: Shooter · Action · PvE
Guns, Gore & Cannoli
Shared: Action · Side Scroller · Shoot 'Em Up
Planes, Bullets and Vodka
Shared: Action · Shoot 'Em Up · Shooter
Bit Blaster XL
Shared: Shooter · Shoot 'Em Up · Arcade
Iron Meat
Shared: Shooter · Side Scroller · Action
Guns, Gore and Cannoli 2
Shared: Action · Side Scroller · Shooter
Geometry Wars™ 3: Dimensions Evolved
Shared: Action · Arcade · Twin Stick Shooter
DRAINUS
Shared: Action · Shooter · Shoot 'Em Up
Rogue Stormers
Shared: Side Scroller · Shoot 'Em Up · Shooter
Guns of Fury
Shared: Shooter · Platformer · Shoot 'Em Up