Games like Rhythm Brawl
Games like Rhythm Brawl include DJMAX RESPECT V, EZ2ON REBOOT : R, Sayonara Wild Hearts, Muse Dash, and Spin Rhythm XD. We matched them by the tags players give Rhythm Brawl on Steam (Casual, Action, and Rhythm): closest matches first, and among equally close ones the better-known games.

DJMAX RESPECT V
Shared: Casual · Rhythm · Action

EZ2ON REBOOT : R
Shared: Action · Rhythm · Casual

Sayonara Wild Hearts
Shared: Rhythm · Action · Casual

Muse Dash
Shared: Rhythm · Casual · Action

Spin Rhythm XD
Shared: Casual · Rhythm · Action

Ragnarock
Shared: Action · Rhythm · Casual

Sixtar Gate: STARTRAIL
Shared: Casual · Action · Rhythm

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

TAPSONIC BOLD
Shared: Casual · Action · Rhythm

Rhythm Doctor
Shared: Rhythm · Action · Casual

PLATiNA :: LAB
Shared: Rhythm · Action · Casual

Music Racer
Shared: Rhythm · Action · Casual

Hi-Fi RUSH
Shared: Action · Rhythm

Beat Saber
Shared: Rhythm · Action · Casual

Slash It 2
Shared: Casual · Action · Rhythm

BOXVR
Shared: Casual · Action · Rhythm

PUMP IT UP RISE
Shared: Rhythm · Action · Casual

One Finger Death Punch 2
Shared: Action · Casual · Rhythm

KAMITSUBAKI CITY ENSEMBLE
Shared: Rhythm · Casual · Action

Slash It
Shared: Casual · Action · Rhythm

KALPA: Cosmic Symphony
Shared: Casual · Rhythm · Action

Party Animals
Shared: Casual · Action

Gang Beasts
Shared: Action · Casual

MASH VP! Re:VISION
Shared: Action · Casual · Rhythm