Games like Party Pumper
Games like Party Pumper include Beat Saber, A Dance of Fire and Ice, Geometry Dash, Audioshield, and Rhythm Doctor. We matched them by the tags players give Party Pumper on Steam (Indie, Music, Rhythm, and Early Access): closest matches first, and among equally close ones the better-known games.

Beat Saber
Shared: Music · Rhythm · VR

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

Geometry Dash
Shared: Music · Rhythm · Indie

Audioshield
Shared: Indie · Music · VR

Rhythm Doctor
Shared: Music · Rhythm · Indie

Muse Dash
Shared: Music · Rhythm · Indie

Thumper
Shared: Indie · Rhythm · Music

AUDICA: Rhythm Shooter
Shared: Music · Rhythm · Indie

AudioSurf
Shared: Music · Indie · Rhythm

Synth Riders
Shared: Music · Rhythm · Indie

Just Shapes & Beats
Shared: Rhythm · Music · Indie

Rift of the NecroDancer
Shared: Music · Indie · Rhythm

Audiosurf 2
Shared: Music · Indie · Rhythm

Dead as Disco
Shared: Rhythm · Music · Indie

Paradiddle
Shared: Music · Rhythm · VR

Intralism
Shared: Music · Indie · Rhythm

Melatonin
Shared: Indie · Rhythm · Music

Neon Beats
Shared: Music · Rhythm · Indie

Music Racer
Shared: Music · Indie · Rhythm

Spin Rhythm XD
Shared: Music · Rhythm · Indie

MUSYNX
Shared: Music · Indie · Rhythm

Ratatan
Shared: Indie · Music · Rhythm

BOXVR
Shared: Indie · Rhythm · Music

Soundboxing
Shared: Indie · Music · Rhythm