Games like Rhythm Racer
Games like Rhythm Racer include AudioSurf, Audiosurf 2, A Dance of Fire and Ice, Melody's Escape, and Retrowave. We matched them by the tags players give Rhythm Racer on Steam (Rhythm, Racing, Music, Music-Based Procedural Generation, and Procedural Generation): closest matches first, and among equally close ones the better-known games.

AudioSurf
Shared: Rhythm · Music · Music-Based Procedural Generation

Audiosurf 2
Shared: Rhythm · Music · Music-Based Procedural Generation

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

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

Retrowave
Shared: Racing · Casual · Music

Music Racer
Shared: Rhythm · Music · Music-Based Procedural Generation

Incredibox
Shared: Rhythm · Music · Casual

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

DJMAX RESPECT V
Shared: Rhythm · Music · Casual

Sayonara Wild Hearts
Shared: Rhythm · Music · Casual

Superflight
Shared: Procedural Generation · Casual · Atmospheric

Geometry Dash
Shared: Music · Rhythm · Character Customization

Muse Dash
Shared: Rhythm · Music · Casual

Beat Hazard 2
Shared: Rhythm · Music-Based Procedural Generation · Music

Dead as Disco
Shared: Rhythm · Music · Character Customization

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

EZ2ON REBOOT : R
Shared: Rhythm · Music · Casual

Intralism
Shared: Rhythm · Music · Casual

Spin Rhythm XD
Shared: Rhythm · Music · Casual

Need for Speed™ Unbound
Shared: Racing · Character Customization · Casual

Rhythm Doctor
Shared: Rhythm · Music · Casual

Symphony
Shared: Music · Rhythm · Casual

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

Melody's Escape 2
Shared: Rhythm · Music · Music-Based Procedural Generation