Games like Sonar Beat
Games like Sonar Beat include Geometry Dash, A Dance of Fire and Ice, Super Hexagon, Muse Dash, and Just Shapes & Beats. We matched them by the tags players give Sonar Beat on Steam (Indie, Music, Rhythm, Arcade, and Action): closest matches first, and among equally close ones the better-known games.

Geometry Dash
Shared: Music · Rhythm · Great Soundtrack

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

Super Hexagon
Shared: Indie · Great Soundtrack · Arcade

Muse Dash
Shared: Music · Rhythm · Great Soundtrack

Just Shapes & Beats
Shared: Rhythm · Music · Great Soundtrack

Rift of the NecroDancer
Shared: Music · Indie · Rhythm

Sayonara Wild Hearts
Shared: Music · Rhythm · Great Soundtrack

Rhythm Doctor
Shared: Music · Rhythm · Indie

Thumper
Shared: Indie · Rhythm · Action

AudioSurf
Shared: Music · Indie · Rhythm

Audiosurf 2
Shared: Music · Indie · Rhythm

Hi-Fi RUSH
Shared: Rhythm · Action · Great Soundtrack

Hatsune Miku: Project DIVA Mega Mix+
Shared: Rhythm · Arcade · Music

Melatonin
Shared: Indie · Rhythm · Music

Music Racer
Shared: Music · Indie · Rhythm

DJMAX RESPECT V
Shared: Music · Rhythm · Action

Beat Saber
Shared: Music · Rhythm · Singleplayer

MUSYNX
Shared: Music · Indie · Rhythm

Spin Rhythm XD
Shared: Music · Rhythm · Indie

BARRIER X
Shared: Indie · Arcade · Music

Intralism
Shared: Music · Indie · Rhythm

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

Crypt of the NecroDancer
Shared: Rhythm · Indie · Great Soundtrack

Neon Beats
Shared: Music · Rhythm · Indie