Games like Outbreak: The Nightmare Chronicles
Games like Outbreak: The Nightmare Chronicles include Tomb Raider Game of the Year, The Callisto Protocol™, Resident Evil Requiem, WUCHANG: Fallen Feathers, and Warframe. We matched them by the tags players give Outbreak: The Nightmare Chronicles on Steam (Survival Horror, Third-Person Shooter, Exploration, Difficult, and PvE): closest matches first, and among equally close ones the better-known games.

Tomb Raider Game of the Year
Shared: Third-Person Shooter · Exploration · Female Protagonist

The Callisto Protocol™
Shared: Survival Horror · Third-Person Shooter · PvE

Resident Evil Requiem
Shared: Survival Horror · Third-Person Shooter · Action-Adventure

WUCHANG: Fallen Feathers
Shared: Difficult · Action RPG · Exploration

Warframe
Shared: Third-Person Shooter · Action RPG · RPG

Warhammer 40,000: Space Marine 2
Shared: Third-Person Shooter · PvE · Action-Adventure

DARK SOULS™ III
Shared: Difficult · Exploration · RPG

Rise of the Tomb Raider™
Shared: Exploration · Female Protagonist · Action-Adventure

Crow Country
Shared: Survival Horror · Exploration · Third-Person Shooter

The Killing Antidote
Shared: Third-Person Shooter · Female Protagonist · Exploration

Black Myth: Wukong
Shared: Action RPG · RPG · Action-Adventure

Resident Evil 4
Shared: Survival Horror · Third-Person Shooter · Horror

Lethal Company
Shared: Survival Horror · Exploration · PvE

Tormented Souls 2
Shared: Survival Horror · Exploration · Third-Person Shooter

Resident Evil 4 (2005)
Shared: Survival Horror · Third-Person Shooter · Action

Monster Hunter: World
Shared: Difficult · RPG · Action RPG

DARK SOULS™ II
Shared: Difficult · Action RPG · Exploration

Resident Evil 3
Shared: Survival Horror · Female Protagonist · Third-Person Shooter

Gothic 1 Remake
Shared: Exploration · RPG · Action RPG

The First Berserker: Khazan
Shared: Difficult · Action RPG · Action-Adventure

Bleak Faith: Forsaken
Shared: Survival Horror · Action RPG · Exploration

Dead Space
Shared: Survival Horror · Third-Person Shooter · Horror

DARK SOULS™: REMASTERED
Shared: Difficult · RPG · Action RPG

Stellar Blade™
Shared: Female Protagonist · Action RPG · Action