Games like Hellbound
Games like Hellbound include DOOM Eternal, ULTRAKILL, Warhammer 40,000: Boltgun, DOOM, and DUSK. We matched them by the tags players give Hellbound on Steam (Action, Indie, Violent, Gore, and FPS): closest matches first, and among equally close ones the better-known games.

DOOM Eternal
Shared: Action · Gore · FPS

ULTRAKILL
Shared: Gore · FPS · Arena Shooter

Warhammer 40,000: Boltgun
Shared: FPS · Action · Shooter

DOOM
Shared: Action · Gore · FPS

DUSK
Shared: FPS · Shooter · Retro

HROT
Shared: FPS · Indie · Action

Prodeus
Shared: Action · FPS · Gore

DOOM + DOOM II
Shared: Action · FPS · Retro

Turbo Overkill
Shared: Action · FPS · Indie

Trepang2
Shared: Shooter · FPS · Action

CULTIC
Shared: Action · FPS · Shooter

DOOM 64
Shared: Action · FPS · Gore

Maximum Action
Shared: Action · Gore · Violent

Bright Memory: Infinite
Shared: Action · Indie · FPS

Call of Duty®
Shared: Action · FPS · Shooter

Wolfenstein II: The New Colossus
Shared: Action · FPS · Gore

Serious Sam 4
Shared: Action · Gore · FPS

Hotline Miami
Shared: Action · Violent · Indie

Quake
Shared: Action · FPS · Shooter

WRATH: Aeon of Ruin
Shared: Action · Violent · FPS

The Citadel
Shared: FPS · Gore · Indie

Ready or Not
Shared: FPS · Shooter · Action

SUPERHOT
Shared: Action · Indie · FPS

My Friend Pedro
Shared: Action · Indie · Gore