Games like RUKIMIN's Disappointing Adventure!
Games like RUKIMIN's Disappointing Adventure! include Celeste, Super Meat Boy, Momodora: Reverie Under The Moonlight, Geometry Dash, and Hollow Knight. We matched them by the tags players give RUKIMIN's Disappointing Adventure! on Steam (Exploration, Side Scroller, Precision Platformer, 2D Platformer, and Difficult): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Difficult · 2D Platformer

Super Meat Boy
Shared: Precision Platformer · Difficult · Platformer

Momodora: Reverie Under The Moonlight
Shared: Side Scroller · 2D Platformer · Exploration

Geometry Dash
Shared: Difficult · Precision Platformer · 2D

Hollow Knight
Shared: Platformer · Difficult · Exploration

Rain World
Shared: Exploration · Difficult · Platformer

VVVVVV
Shared: Precision Platformer · 2D Platformer · Platformer

Touhou Luna Nights
Shared: Side Scroller · Exploration · Difficult

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

SANABI
Shared: 2D Platformer · 2D · Action

Webbed
Shared: 2D Platformer · Exploration · Cute

Will You Snail?
Shared: Precision Platformer · Difficult · 2D Platformer

Afterimage
Shared: 2D Platformer · Side Scroller · Exploration

Prince of Persia The Lost Crown
Shared: Exploration · 2D Platformer · Side Scroller

Bō: Path of the Teal Lotus
Shared: Side Scroller · Exploration · Precision Platformer

Bread & Fred
Shared: 2D Platformer · Precision Platformer · Cute

Jump King
Shared: Precision Platformer · Difficult · Platformer

Pizza Tower
Shared: 2D Platformer · Platformer · Funny

Thomas Was Alone
Shared: Side Scroller · Platformer · 2D Platformer

Rabi-Ribi
Shared: Exploration · Side Scroller · Cute

Downwell
Shared: Precision Platformer · Platformer · 2D Platformer

Gunbrella
Shared: Exploration · Side Scroller · Difficult

Öoo
Shared: Exploration · 2D Platformer · 2D

Super Meat Boy Forever
Shared: Precision Platformer · Difficult · Platformer