Games like 99 Fails Lite
Games like 99 Fails Lite include Celeste, Pogostuck: Rage With Your Friends, Anomaly Agent, Super Meat Boy, and Hollow Knight. We matched them by the tags players give 99 Fails Lite on Steam (Precision Platformer, Side Scroller, Roguelike, 2D Platformer, and Souls-like): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Difficult · 2D Platformer

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

Anomaly Agent
Shared: Side Scroller · 2D Platformer · Souls-like

Super Meat Boy
Shared: Precision Platformer · 2D Platformer · Difficult

Hollow Knight
Shared: Souls-like · Platformer · Difficult

Skul: The Hero Slayer
Shared: Roguelike · Roguelite · Side Scroller

Jump King
Shared: Precision Platformer · Difficult · Psychological Horror

Dead Cells
Shared: Roguelike · Roguelite · Souls-like

Geometry Dash
Shared: Precision Platformer · Difficult · Platformer

Blasphemous 2
Shared: Difficult · Souls-like · Side Scroller

SANABI
Shared: 2D Platformer · Story Rich · Action

Spelunky 2
Shared: 2D Platformer · Platformer · Difficult

Rogue Legacy 2
Shared: Roguelite · Platformer · Roguelike

Only Climb: Better Together
Shared: Precision Platformer · Roguelike · Difficult

Hollow Knight: Silksong
Shared: Souls-like · Difficult · Platformer

JUMP KING QUEST
Shared: Precision Platformer · 2D Platformer · Souls-like

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

Nine Sols
Shared: Souls-like · Difficult · Platformer

Downwell
Shared: Precision Platformer · 2D Platformer · Platformer

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

Momodora: Reverie Under The Moonlight
Shared: Side Scroller · 2D Platformer · Souls-like

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

Hades
Shared: Roguelite · Roguelike · Indie

Hades II
Shared: Roguelike · Roguelite · Action