Games like Hack or Die!
Games like Hack or Die! include Super Meat Boy, Celeste, Katana ZERO, SANABI, and Downwell. We matched them by the tags players give Hack or Die! on Steam (Action, 2D Platformer, Sports, Indie, and Platformer): closest matches first, and among equally close ones the better-known games.

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

Celeste
Shared: Precision Platformer · Indie · 2D Platformer

Katana ZERO
Shared: Action · Pixel Graphics · 2D Platformer

SANABI
Shared: Action · 2D Platformer · Pixel Graphics

Downwell
Shared: Precision Platformer · Indie · 2D Platformer

VVVVVV
Shared: 2D Platformer · Indie · Platformer

Pizza Tower
Shared: 2D Platformer · Indie · Platformer

The Messenger
Shared: Platformer · Action · Pixel Graphics

NINJA GAIDEN: Ragebound
Shared: Action · 2D Platformer · Platformer

Gravity Circuit
Shared: Action · Indie · Platformer

Ambidextro
Shared: Action · 2D Platformer · Precision Platformer

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

Broforce
Shared: Action · Pixel Graphics · Platformer

Sonic Origins
Shared: Action · 2D Platformer · Platformer

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

Jump King
Shared: Indie · Precision Platformer · Action

N++ (NPLUSPLUS)
Shared: 2D Platformer · Action · Precision Platformer

BlazBlue Entropy Effect
Shared: Action · Platformer · Pixel Graphics

F.I.S.T.: Forged In Shadow Torch
Shared: Action · Platformer · 2D Platformer

UFO 50
Shared: Action · Indie · Pixel Graphics

Tribal Hunter
Shared: Action · 2D Platformer · Platformer

LOVE
Shared: Indie · Action · Platformer

Neon White
Shared: Action · Platformer · Parkour

Mark of the Ninja
Shared: Platformer · Action · Indie