Games like Music Boy 3D
Games like Music Boy 3D include A Dance of Fire and Ice, Geometry Dash, Rhythm Doctor, Intralism, and Beat Saber. We matched them by the tags players give Music Boy 3D on Steam (Indie, Early Access, Action, Music, and Rhythm): closest matches first, and among equally close ones the better-known games.

A Dance of Fire and Ice
Shared: Music · Rhythm · Indie

Geometry Dash
Shared: Music · Level Editor · Rhythm

Rhythm Doctor
Shared: Music · Rhythm · Indie

Intralism
Shared: Indie · Music · Rhythm

Beat Saber
Shared: Music · Rhythm · Indie

Rift of the NecroDancer
Shared: Indie · Music · Rhythm

Music Racer
Shared: Indie · Music · Rhythm

EZ2ON REBOOT : R
Shared: Action · Rhythm · Music

Just Shapes & Beats
Shared: Rhythm · Music · Indie

AudioSurf
Shared: Indie · Music · Rhythm

Dead as Disco
Shared: Rhythm · Music · Action

Beat Hazard
Shared: Rhythm · Music · Music-Based Procedural Generation

Hextech Mayhem: A League of Legends Story™
Shared: Music · Rhythm · Action

Audiosurf 2
Shared: Indie · Music · Rhythm

Muse Dash
Shared: Music · Rhythm · Indie

Thumper
Shared: Indie · Action · Rhythm

Melatonin
Shared: Indie · Rhythm · Music

Pistol Whip
Shared: Action · Rhythm · Music

BPM: BULLETS PER MINUTE
Shared: Indie · Action · Rhythm

Spin Rhythm XD
Shared: Indie · Music · Rhythm

DJMAX RESPECT V
Shared: Music · Rhythm · Action

Melody's Escape
Shared: Rhythm · Music-Based Procedural Generation · Action

Soundodger+
Shared: Indie · Music · Rhythm

AUDICA: Rhythm Shooter
Shared: Indie · Action · Music