Games like HELLBOUND INC
Games like HELLBOUND INC include Celeste, Super Meat Boy, Portal 2, LIMBO, and Planet of Lana. We matched them by the tags players give HELLBOUND INC on Steam (Precision Platformer, Difficult, 2D Platformer, Puzzle Platformer, and Dark Humor): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Difficult · 2D Platformer

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

Portal 2
Shared: Puzzle · Platformer · Dark Humor

LIMBO
Shared: Puzzle Platformer · Puzzle · Platformer

Planet of Lana
Shared: Puzzle Platformer · 2D Platformer · Puzzle

Braid
Shared: Puzzle Platformer · 2D Platformer · Puzzle

VVVVVV
Shared: Precision Platformer · 2D Platformer · Difficult

Jump King
Shared: Difficult · Precision Platformer · Platformer

Portal
Shared: Puzzle Platformer · Puzzle · Action

Geometry Dash
Shared: Difficult · Precision Platformer · Platformer

Hollow Knight
Shared: Difficult · Platformer · Indie

Leap Year
Shared: Precision Platformer · 2D Platformer · Puzzle Platformer

Fever Meme
Shared: Parody · Dark Humor · Precision Platformer

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

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

INSIDE
Shared: Puzzle Platformer · 2D Platformer · Puzzle

Pizza Tower
Shared: 2D Platformer · Platformer · Indie

Defy Gravity Extended
Shared: Puzzle Platformer · Platformer · Puzzle

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

Downwell
Shared: Precision Platformer · 2D Platformer · Difficult

Trine 2: Complete Story
Shared: Puzzle Platformer · 2D Platformer · Platformer

Webbed
Shared: 2D Platformer · Puzzle Platformer · Platformer

Getting Over It with Bennett Foddy
Shared: Difficult · Platformer · Dark Humor

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