Games like HardAF
Games like HardAF include Super Meat Boy, Celeste, SANABI, VVVVVV, and Katana ZERO. We matched them by the tags players give HardAF on Steam (Precision Platformer, Action, Pixel Graphics, Platformer, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

Super Meat Boy
Shared: Precision Platformer · Platformer · Pixel Graphics

Celeste
Shared: Precision Platformer · Pixel Graphics · Platformer

SANABI
Shared: Pixel Graphics · Action · 2D Platformer

VVVVVV
Shared: Precision Platformer · Pixel Graphics · Platformer

Katana ZERO
Shared: Action · Pixel Graphics · Platformer

Downwell
Shared: Precision Platformer · Pixel Graphics · Platformer

Gravity Circuit
Shared: Action · Platformer · Pixel Graphics

Jump King
Shared: Precision Platformer · Pixel Graphics · Platformer

Skul: The Hero Slayer
Shared: Action · Pixel Graphics · Indie

Shovel Knight: Treasure Trove
Shared: Pixel Graphics · Platformer · Action

The Messenger
Shared: Platformer · Pixel Graphics · Action

Broforce
Shared: Action · Pixel Graphics · Platformer

Pizza Tower
Shared: 2D Platformer · Platformer · Pixel Graphics

Ambidextro
Shared: Precision Platformer · Action · Pixel Graphics

Geometry Dash
Shared: Precision Platformer · 2D · Platformer

NINJA GAIDEN: Ragebound
Shared: Action · Platformer · Pixel Graphics

Electronic Super Joy
Shared: Platformer · Action · Precision Platformer

Bloodstained: Curse of the Moon
Shared: Action · Pixel Graphics · Platformer

Rogue Legacy
Shared: Platformer · Action · Indie

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

Dungeon Escape
Shared: Precision Platformer · Platformer · 2D Platformer

Gato Roboto
Shared: Action · Pixel Graphics · Indie

Vampire Survivors
Shared: Pixel Graphics · 2D · Action

Bzzzt
Shared: Precision Platformer · Pixel Graphics · 2D Platformer