Games like RT
Games like RT include Katana ZERO, Broforce, Huntdown, Alex Jones: NWO Wars, and Anomaly Agent. We matched them by the tags players give RT on Steam (Side Scroller, 2D Platformer, Shoot 'Em Up, Action, and Hack and Slash): closest matches first, and among equally close ones the better-known games.
Katana ZERO
Shared: Action · 2D Platformer · Platformer
Broforce
Shared: Action · Platformer · Side Scroller
Huntdown
Shared: Side Scroller · Action · Shoot 'Em Up
Alex Jones: NWO Wars
Shared: Action · 2D Platformer · Side Scroller
Anomaly Agent
Shared: Side Scroller · 2D Platformer · Hack and Slash
Guns, Gore & Cannoli
Shared: Side Scroller · Action · Shoot 'Em Up
Momodora: Reverie Under The Moonlight
Shared: 2D Platformer · Side Scroller · Metroidvania
Blasphemous
Shared: Metroidvania · Action · 2D
Skul: The Hero Slayer
Shared: Action · Side Scroller · Platformer
Contra: Operation Galuga
Shared: Action · 2D Platformer · Side Scroller
SHINOBI: Art of Vengeance
Shared: 2D Platformer · Action · Platformer
My Friend Pedro
Shared: Action · Shooter · Side Scroller
METAL SLUG
Shared: Side Scroller · Action · Shoot 'Em Up
NINJA GAIDEN: Ragebound
Shared: Action · 2D Platformer · Side Scroller
Terminator 2D: NO FATE
Shared: Side Scroller · 2D Platformer · Action
Rogue Legacy 2
Shared: Action · Platformer · Arcade
Guns, Gore and Cannoli 2
Shared: Side Scroller · Action · Shoot 'Em Up
Kero Blaster
Shared: Side Scroller · Shoot 'Em Up · Platformer
Guns of Fury
Shared: Shoot 'Em Up · Platformer · 2D Platformer
Super Meat Boy
Shared: 2D Platformer · Platformer · 2D
SANABI
Shared: Action · 2D Platformer · Pixel Graphics
Blasphemous 2
Shared: 2D Platformer · Side Scroller · Hack and Slash
Rogue Legacy
Shared: Platformer · Action · Side Scroller
METAL SLUG 3
Shared: Side Scroller · Action · Arcade