Games like Crappy Climber
Games like Crappy Climber include Geometry Dash, Jump King, A Difficult Game About Climbing, Getting Over It with Bennett Foddy, and Celeste. We matched them by the tags players give Crappy Climber on Steam (Psychological Horror, Precision Platformer, 3D Platformer, Adventure, and Platformer): closest matches first, and among equally close ones the better-known games.

Geometry Dash
Shared: Precision Platformer · Difficult · 2D

Jump King
Shared: Psychological Horror · Precision Platformer · Adventure

A Difficult Game About Climbing
Shared: Psychological Horror · Adventure · Precision Platformer

Getting Over It with Bennett Foddy
Shared: Psychological Horror · Singleplayer · Difficult

Celeste
Shared: Precision Platformer · Difficult · Platformer

Portal 2
Shared: Platformer · Singleplayer · 3D Platformer

Pogostuck: Rage With Your Friends
Shared: Psychological Horror · Precision Platformer · Platformer

Crash Bandicoot™ N. Sane Trilogy
Shared: 3D Platformer · Platformer · Adventure

Get To Work
Shared: Adventure · Precision Platformer · 3D Platformer

Hollow Knight
Shared: Platformer · 2D · Difficult

Super Meat Boy
Shared: Precision Platformer · Platformer · Difficult

A Hat in Time
Shared: 3D Platformer · Adventure · Platformer

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

The End Is Nigh
Shared: Precision Platformer · Platformer · Adventure

Sonic Lost World
Shared: Adventure · 3D Platformer · Platformer

Sonic Forces
Shared: 3D Platformer · Adventure · Platformer

Ratchet & Clank: Rift Apart
Shared: Adventure · 3D Platformer · Singleplayer

Spyro™ Reignited Trilogy
Shared: 3D Platformer · Adventure · Singleplayer

I wanna be the Creator
Shared: Platformer · Adventure · Precision Platformer

Changed
Shared: Psychological Horror · Difficult · Adventure

Sonic the Hedgehog 4 Episode 1
Shared: Platformer · Adventure · 2D

Psychonauts 2
Shared: 3D Platformer · Adventure · Singleplayer

Kao the Kangaroo: Round 2 (2003 re-release)
Shared: 3D Platformer · Adventure · Platformer

Night in the Woods
Shared: Adventure · Psychological Horror · Singleplayer