Games like quadrant
Games like quadrant include A Dance of Fire and Ice, Rhythm Doctor, Melatonin, AudioSurf, and Just Shapes & Beats. We matched them by the tags players give quadrant on Steam (Indie and Rhythm): closest matches first, and among equally close ones the better-known games.

A Dance of Fire and Ice
Shared: Rhythm · Indie

Rhythm Doctor
Shared: Rhythm · Indie

Melatonin
Shared: Indie · Rhythm

AudioSurf
Shared: Rhythm · Indie

Just Shapes & Beats
Shared: Rhythm · Indie

Rift of the NecroDancer
Shared: Rhythm · Indie

Crypt of the NecroDancer
Shared: Rhythm · Indie

Thumper
Shared: Indie · Rhythm

BPM: BULLETS PER MINUTE
Shared: Rhythm · Indie

Geometry Dash
Shared: Rhythm · Indie

Audiosurf 2
Shared: Rhythm · Indie

Super Hexagon
Shared: Indie · Rhythm

Muse Dash
Shared: Rhythm · Indie

Beat Saber
Shared: Rhythm · Indie

Intralism
Shared: Rhythm · Indie

Neon Beats
Shared: Rhythm · Indie

Spin Rhythm XD
Shared: Rhythm · Indie

Music Racer
Shared: Rhythm · Indie

Audioshield
Shared: Indie · Rhythm

140
Shared: Indie · Rhythm

MUSYNX
Shared: Indie · Rhythm

Ratatan
Shared: Indie · Rhythm

AVICII Invector
Shared: Indie · Rhythm

Beat Hazard
Shared: Rhythm · Indie