Games like Polylylyrhythm
Games like Polylylyrhythm include A Dance of Fire and Ice, Incredibox, AudioSurf, Rocksmith® 2014 Edition REMASTERED LEARN & PLAY, and Strange Jigsaws. We matched them by the tags players give Polylylyrhythm on Steam (Casual, Rhythm, Education, Minimalist, and 2D): closest matches first, and among equally close ones the better-known games.

A Dance of Fire and Ice
Shared: Rhythm · 2D · Casual

Incredibox
Shared: Casual · Rhythm · 2D

AudioSurf
Shared: Rhythm · Casual · Indie

Rocksmith® 2014 Edition REMASTERED LEARN & PLAY
Shared: Rhythm · Education · Casual

Strange Jigsaws
Shared: Casual · 2D · Minimalist

Muse Dash
Shared: Rhythm · Casual · 2D

Geometry Dash
Shared: Rhythm · 2D · Colorful

Hook
Shared: Casual · Minimalist · 2D

Banana
Shared: Casual · 2D · Family Friendly

Super Hexagon
Shared: Rhythm · Minimalist · Indie

Zup! S
Shared: Casual · 2D · Minimalist

Neon Beats
Shared: Rhythm · 2D · Minimalist

Open Hexagon
Shared: Rhythm · Minimalist · Casual

Beatblock
Shared: Rhythm · 2D · Tutorial

Zup! X
Shared: Casual · 2D · Minimalist

Orbt XL
Shared: 2D · Casual · Minimalist

LYNE
Shared: Minimalist · Casual · Procedural Generation

One Hand Clapping
Shared: Casual · Rhythm · 2D

Zup! Z
Shared: Casual · 2D · Minimalist

DJMAX RESPECT V
Shared: Rhythm · Casual · 2D

Melvor Idle
Shared: Casual · 2D · Minimalist

Rhythia
Shared: Casual · Rhythm · 2D

Rocksmith+
Shared: Education · Rhythm · Casual

140
Shared: Rhythm · Minimalist · Indie