Games like Hellscreen
Games like Hellscreen include DUSK, ULTRAKILL, CULTIC, Ion Fury, and Warhammer 40,000: Boltgun. We matched them by the tags players give Hellscreen on Steam (Boomer Shooter, Fast-Paced, Retro, Shooter, and Metroidvania): closest matches first, and among equally close ones the better-known games.

DUSK
Shared: Boomer Shooter · Retro · Fast-Paced

ULTRAKILL
Shared: Fast-Paced · Boomer Shooter · Retro

CULTIC
Shared: Boomer Shooter · Shooter · Old School

Ion Fury
Shared: Boomer Shooter · Fast-Paced · Retro

Warhammer 40,000: Boltgun
Shared: Boomer Shooter · Retro · Shooter

Serious Sam: Siberian Mayhem
Shared: Boomer Shooter · Shooter · Atmospheric

DOOM
Shared: Shooter · Fast-Paced · First-Person

HROT
Shared: Boomer Shooter · Retro · Shooter

Project Warlock
Shared: Boomer Shooter · Retro · Fast-Paced

Trepang2
Shared: Shooter · Horror · Fast-Paced

DOOM Eternal
Shared: Fast-Paced · Shooter · Action

Quake
Shared: Shooter · Boomer Shooter · Retro

DOOM + DOOM II
Shared: Retro · Boomer Shooter · Shooter

Turbo Overkill
Shared: Boomer Shooter · Shooter · Retro

DOOM 64
Shared: Retro · Boomer Shooter · Shooter

Devil Daggers
Shared: Fast-Paced · Retro · Horror

Prodeus
Shared: Boomer Shooter · Retro · Shooter

WRATH: Aeon of Ruin
Shared: Boomer Shooter · Retro · Shooter

Warhammer 40,000: Boltgun 2
Shared: Boomer Shooter · Retro · Shooter

Selaco
Shared: Shooter · Boomer Shooter · Retro

METRO 2033 Redux
Shared: Horror · Atmospheric · Shooter

Dread Templar
Shared: Boomer Shooter · Retro · Fast-Paced

Monument
Shared: Boomer Shooter · Shooter · Horror

Project Warlock II
Shared: Boomer Shooter · Retro · Shooter