Games like Rudiment
Games like Rudiment include Incredibox, A Dance of Fire and Ice, Zup! S, People Playground, and Muse Dash. We matched them by the tags players give Rudiment on Steam (Casual, Rhythm, Sandbox, 2D, and Minimalist): closest matches first, and among equally close ones the better-known games.

Incredibox
Shared: Casual · Rhythm · 2D

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

Zup! S
Shared: Casual · 2D · Indie

People Playground
Shared: Sandbox · 2D · Singleplayer

Muse Dash
Shared: Rhythm · Casual · 2D

Super Hexagon
Shared: Rhythm · Indie · Minimalist

Game Dev Tycoon
Shared: Casual · Indie · 2D

Neon Beats
Shared: Rhythm · 2D · Indie

Garry's Mod
Shared: Sandbox · Casual · Singleplayer

Geometry Dash
Shared: Rhythm · 2D · Singleplayer

Zup! X
Shared: Casual · 2D · Indie

DJMAX RESPECT V
Shared: Rhythm · Casual · 2D

AudioSurf
Shared: Rhythm · Casual · Indie

Zup! Z
Shared: Casual · 2D · Indie

Scribblenauts Unlimited
Shared: Casual · Sandbox · 2D

Melvor Idle
Shared: Casual · 2D · Indie

Rhythm Doctor
Shared: Rhythm · Indie · 2D

Vampire Survivors
Shared: 2D · Casual · Indie

Zup! 3
Shared: Casual · 2D · Indie

Potion Craft: Alchemist Simulator
Shared: Singleplayer · 2D · Casual

Terraria
Shared: Sandbox · 2D · Indie

Zup!
Shared: Casual · 2D · Indie

Banana
Shared: Casual · 2D · Singleplayer

Hook
Shared: Casual · Minimalist · 2D