Games like Dashy Square
Games like Dashy Square include Geometry Dash, A Dance of Fire and Ice, Rift of the NecroDancer, Hollow Knight, and Muse Dash. We matched them by the tags players give Dashy Square on Steam (Indie, Action, Music, Difficult, and Platformer): closest matches first, and among equally close ones the better-known games.

Geometry Dash
Shared: Music · Difficult · Level Editor

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

Rift of the NecroDancer
Shared: Indie · Music · Rhythm

Hollow Knight
Shared: Platformer · Difficult · Indie

Muse Dash
Shared: Music · Rhythm · Indie

Rhythm Doctor
Shared: Music · Indie · Rhythm

Super Hexagon
Shared: Indie · Difficult · Rhythm

Just Shapes & Beats
Shared: Music · Rhythm · Difficult

Hollow Knight: Silksong
Shared: Indie · Difficult · 2D

Celeste
Shared: Difficult · Indie · Platformer

Electronic Super Joy
Shared: Indie · Platformer · Difficult

Super Meat Boy
Shared: Indie · Difficult · Platformer

DJMAX RESPECT V
Shared: Music · Action · Rhythm

Skul: The Hero Slayer
Shared: Indie · Action · 2D

140
Shared: Indie · Platformer · Music

Cuphead
Shared: Difficult · Platformer · Indie

Neon Beats
Shared: Music · Indie · Rhythm

Intralism
Shared: Indie · Music · Rhythm

Rogue Legacy 2
Shared: Action · Indie · Platformer

Spin Rhythm XD
Shared: Music · Indie · Rhythm

Shovel Knight: Treasure Trove
Shared: Indie · Platformer · Action

BARRIER X
Shared: Indie · Action · Difficult

Hextech Mayhem: A League of Legends Story™
Shared: Music · Action · Rhythm

Music Racer
Shared: Indie · Music · Action