Games like Nightmare Survival
Games like Nightmare Survival include Escape From Duckov, Resident Evil 4, PUBG: BATTLEGROUNDS, Left 4 Dead 2, and Zombieville USA 3D. We matched them by the tags players give Nightmare Survival on Steam (Action, Arcade, Shooter, Top-Down Shooter, and Action RTS): closest matches first, and among equally close ones the better-known games.

Escape From Duckov
Shared: Action · Top-Down Shooter · Shooter

Resident Evil 4
Shared: Action · Horror · Survival

PUBG: BATTLEGROUNDS
Shared: Shooter · Action · Survival

Left 4 Dead 2
Shared: Shooter · Action · Survival

Zombieville USA 3D
Shared: Action · Arcade · Shooter

The Outlast Trials
Shared: Action · Horror · Psychological Horror

Outlast
Shared: Horror · Action · Survival

Resident Evil 2 (1998)
Shared: Action · Shooter · Survival

Resident Evil 3 Nemesis (1999)
Shared: Action · Shooter · Survival

Dead Space™ 2
Shared: Shooter · Action · Horror

Dead Space™ 3
Shared: Action · Shooter · Horror

Darkwood
Shared: Action · Horror · Dark

ACE COMBAT™ 7: SKIES UNKNOWN
Shared: Arcade · Shooter · Action

Choo-Choo Charles
Shared: Shooter · 3D · Horror

Hatsune Miku: Project DIVA Mega Mix+
Shared: Arcade · Action · 3D

Resident Evil (1996)
Shared: Action · Shooter · Survival

Dead Space
Shared: Shooter · Horror · Action

Poppy Playtime
Shared: Horror · Dark · Survival

The Callisto Protocol™
Shared: Shooter · Action · Horror

Studio System : Guardian Angel
Shared: Shooter · Action · 3D

Outlast 2
Shared: Horror · Psychological Horror · Dark

Children of the Sun
Shared: Action · Arcade · Shooter

12 is Better Than 6
Shared: Action · Shooter · Top-Down Shooter

Dark Deception
Shared: Action · Horror · Psychological Horror