Games like Peepo Hop!
Games like Peepo Hop! include Jump King, Geometry Dash, Celeste, A Difficult Game About Climbing, and Getting Over It with Bennett Foddy. We matched them by the tags players give Peepo Hop! on Steam (Psychological Horror, Precision Platformer, Difficult, Adventure, and 2D): closest matches first, and among equally close ones the better-known games.

Jump King
Shared: Psychological Horror · Precision Platformer · Difficult

Geometry Dash
Shared: Difficult · Precision Platformer · 2D

Celeste
Shared: Precision Platformer · Difficult · Platformer

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

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

Hollow Knight
Shared: Difficult · Platformer · 2D

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

Super Meat Boy
Shared: Precision Platformer · Difficult · Platformer

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

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

Rain World
Shared: Difficult · Atmospheric · Platformer

Changed
Shared: Psychological Horror · Difficult · Adventure

Dead Cells
Shared: Adventure · 2D · Platformer

Get To Work
Shared: Difficult · Adventure · Precision Platformer

Ori and the Will of the Wisps
Shared: Platformer · Adventure · Singleplayer

Peaks of Yore
Shared: Psychological Horror · Difficult · Adventure

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

Nine Sols
Shared: Difficult · 2D · Platformer

LIMBO
Shared: Platformer · 2D · Adventure

Lobotomy Corporation | Monster Management Simulation
Shared: Psychological Horror · Difficult · 2D

MiSide
Shared: Psychological Horror · Cute · Singleplayer

Squishy the Suicidal Pig
Shared: Platformer · Adventure · Difficult

Shovel Knight: Treasure Trove
Shared: Platformer · 2D · Adventure

Castle Crashers®
Shared: 2D · Adventure · Funny