Games like Nightmare Simulator
Games like Nightmare Simulator include Middle-earth: Shadow of War, Hotline Miami, God of War, DOKA 2 KISHKI EDITION, and G2 Fighter / 基因特工. We matched them by the tags players give Nightmare Simulator on Steam (Action, Adventure, Indie, RPG, and Gore): closest matches first, and among equally close ones the better-known games.

Middle-earth: Shadow of War
Shared: Action · RPG · Adventure

Hotline Miami
Shared: Action · Indie · Violent

God of War
Shared: Action · Adventure · RPG

DOKA 2 KISHKI EDITION
Shared: Action · Gore · Indie

G2 Fighter / 基因特工
Shared: Adventure · Action · RPG

CARRION
Shared: Action · Gore · Indie

Charlie Murder
Shared: Action · Indie · Adventure

The Black Masses
Shared: Action · Adventure · Indie

The Ascent
Shared: Action · RPG · Indie

OUTRIDERS
Shared: RPG · Action · Adventure

Warhammer 40,000: Inquisitor - Martyr
Shared: Action · RPG · Adventure

My Friend Pedro
Shared: Action · Indie · Gore

Warhammer 40,000: Inquisitor - Prophecy
Shared: Action · Adventure · RPG

The Walking Dead: Saints & Sinners
Shared: Action · Adventure · Gore

Serious Sam 4
Shared: Action · Gore · Adventure

Paint the Town Red
Shared: Action · Gore · Violent

Yakuza: Like a Dragon
Shared: Adventure · Action · RPG

Dust: An Elysian Tail
Shared: Action · Indie · Adventure

Hotline Miami 2: Wrong Number
Shared: Action · Gore · Violent

Yakuza Kiwami
Shared: Action · Adventure · RPG

BioShock Infinite
Shared: Action · Adventure · RPG

Last Oasis
Shared: Action · RPG · Adventure

DOOM Eternal
Shared: Action · Gore · Violent

Kindergarten 2
Shared: Adventure · Gore · Indie