Games like Rainbow Laser Disco Dungeon
Games like Rainbow Laser Disco Dungeon include A Dance of Fire and Ice, Halo: Spartan Assault, Beat Hazard, Hotline Miami, and Cyberhunt. We matched them by the tags players give Rainbow Laser Disco Dungeon on Steam (Action, Twin Stick Shooter, Rhythm, Top-Down Shooter, and Arcade): closest matches first, and among equally close ones the better-known games.

A Dance of Fire and Ice
Shared: Rhythm · Arcade · 2D

Halo: Spartan Assault
Shared: Action · Top-Down Shooter · Twin Stick Shooter

Beat Hazard
Shared: Rhythm · Twin Stick Shooter · Action

Hotline Miami
Shared: Action · Indie · Top-Down

Cyberhunt
Shared: Action · Twin Stick Shooter · Arcade

HELLDIVERS™ Dive Harder Edition
Shared: Twin Stick Shooter · Top-Down Shooter · Action

SYNTHETIK: Legion Rising
Shared: Action · Top-Down Shooter · Twin Stick Shooter

Geometry Dash
Shared: Rhythm · 2D · Colorful

Super Hexagon
Shared: Arcade · Rhythm · Action

Chippy
Shared: Twin Stick Shooter · Top-Down Shooter · Arcade

BALL x PIT
Shared: Action · Arcade · Top-Down Shooter

RUINER
Shared: Action · Top-Down Shooter · Twin Stick Shooter

12 is Better Than 6
Shared: Action · Top-Down Shooter · Shooter

Beat Hazard 2
Shared: Rhythm · Twin Stick Shooter · Top-Down Shooter

Sky Force Reloaded
Shared: Arcade · Top-Down Shooter · Action

Crimsonland
Shared: Action · Shooter · Top-Down Shooter

Waves
Shared: Twin Stick Shooter · Arcade · Shooter

Relic Hunters Zero: Remix
Shared: Twin Stick Shooter · Action · Top-Down Shooter

Rift of the NecroDancer
Shared: Rhythm · Action · Arcade

Planes, Bullets and Vodka
Shared: Action · Arcade · Shooter

Brigador: Up-Armored Edition
Shared: Action · Twin Stick Shooter · Top-Down Shooter

Melatonin
Shared: Rhythm · Action · Colorful

The Ascent
Shared: Top-Down Shooter · Action · Shooter

The Hong Kong Massacre
Shared: Action · Top-Down Shooter · Twin Stick Shooter