Games like ASCII-RIFT
Games like ASCII-RIFT include A Dance of Fire and Ice, Super Hexagon, AudioSurf, Music Racer, and Geometry Dash. We matched them by the tags players give ASCII-RIFT on Steam (Action, Rhythm, Arcade, Music-Based Procedural Generation, and Score Attack): closest matches first, and among equally close ones the better-known games.

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

Super Hexagon
Shared: Arcade · Indie · Rhythm

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

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

Geometry Dash
Shared: Rhythm · Music · 2D

Rhythm Doctor
Shared: Rhythm · Music · Action

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

Rift of the NecroDancer
Shared: Rhythm · Action · Arcade

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

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

DJMAX RESPECT V
Shared: Rhythm · Action · Music

Intralism
Shared: Rhythm · Music · Indie

Beatblock
Shared: Rhythm · Arcade · Music

Melatonin
Shared: Rhythm · Indie · Action

Muse Dash
Shared: Rhythm · Music · 2D

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

Just Shapes & Beats
Shared: Rhythm · Music · Action

Spin Rhythm XD
Shared: Rhythm · Action · Music

BIT.TRIP BEAT
Shared: Rhythm · Action · Indie

Vampire Survivors
Shared: Indie · Action · Arcade

Sixtar Gate: STARTRAIL
Shared: Action · Rhythm · Arcade

Sayonara Wild Hearts
Shared: Rhythm · Action · Music

BIT.TRIP RUNNER
Shared: Rhythm · Action · Music

Windowkill
Shared: Action · Arcade · Indie