Games like R-Type Dimensions III
Games like R-Type Dimensions III include Soda Crisis, Huntdown, Broforce, METAL SLUG, and Bit Blaster XL. We matched them by the tags players give R-Type Dimensions III on Steam (Side Scroller, Shoot 'Em Up, Action, Shooter, and 2.5D): closest matches first, and among equally close ones the better-known games.

Soda Crisis
Shared: Side Scroller · Action · Shoot 'Em Up

Huntdown
Shared: Side Scroller · Action · Shooter

Broforce
Shared: Action · 2D · Side Scroller

METAL SLUG
Shared: Action · Side Scroller · Shoot 'Em Up

Bit Blaster XL
Shared: Shoot 'Em Up · Shooter · Action

Guns, Gore and Cannoli 2
Shared: Side Scroller · Action · 2D

R-Type Final 2
Shared: Shoot 'Em Up · Side Scroller · Action

Alex Jones: NWO Wars
Shared: Action · Shooter · Shoot 'Em Up

METAL SLUG 3
Shared: Action · Side Scroller · Shooter

Guns, Gore & Cannoli
Shared: Side Scroller · Action · 2D

METAL SLUG X
Shared: Action · Shoot 'Em Up · Side Scroller

Contra: Operation Galuga
Shared: Action · Shooter · Shoot 'Em Up

Kero Blaster
Shared: Side Scroller · Shoot 'Em Up · Shooter

DRAINUS
Shared: Shoot 'Em Up · Action · Shooter

METAL SLUG 2
Shared: Action · Side Scroller · Shoot 'Em Up

Contra Anniversary Collection
Shared: Side Scroller · Action · 2D

Blazing Chrome
Shared: Action · Side Scroller · Shoot 'Em Up

Zombotron
Shared: Action · 2D · Shooter

Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Action · Shooter

Intrusion 2
Shared: Action · Shooter · 2D

STAR WARS™ Battlefront™ II
Shared: Shooter · Action · Sci-fi

My Friend Pedro
Shared: Action · Shooter · Side Scroller

Terminator 2D: NO FATE
Shared: Side Scroller · Action · Shooter

Jets'n'Guns 2
Shared: Action · Shoot 'Em Up · Side Scroller