Games like Sinister Outbreak
Games like Sinister Outbreak include Tomb Raider Game of the Year, The Callisto Protocol™, Warhammer 40,000: Space Marine 2, Dead Space™ 2, and Rise of the Tomb Raider™. We matched them by the tags players give Sinister Outbreak on Steam (Action, Adventure, Action-Adventure, Shooter, and Third-Person Shooter): closest matches first, and among equally close ones the better-known games.

Tomb Raider Game of the Year
Shared: Action · Adventure · Third Person

The Callisto Protocol™
Shared: Third-Person Shooter · Shooter · Action-Adventure

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

Dead Space™ 2
Shared: Action · Shooter · Third-Person Shooter

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

Dead Space
Shared: Third-Person Shooter · Shooter · Sci-fi

PUBG: BATTLEGROUNDS
Shared: Shooter · Action · Third-Person Shooter

Grand Theft Auto V Legacy
Shared: Action · Adventure · Shooter

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

Dead Space (2008)
Shared: Action · Sci-fi · Third Person

The Last of Us™ Part I
Shared: Action-Adventure · Shooter · Third-Person Shooter

Warhammer 40,000: Space Marine - Anniversary Edition
Shared: Action · Third-Person Shooter · Third Person

REMNANT II®
Shared: Action · Adventure · Third-Person Shooter

HELLDIVERS™ 2
Shared: Action · Third-Person Shooter · Shooter

Star Wars Outlaws
Shared: Action · Adventure · Action-Adventure

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

PRAGMATA
Shared: Action · Adventure · Third-Person Shooter

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

UNCHARTED™: Legacy of Thieves Collection
Shared: Adventure · Action-Adventure · Action

Atomic Heart
Shared: Adventure · Action · Action-Adventure

Escape From Duckov
Shared: Action · Adventure · Shooter

A Plague Tale: Requiem
Shared: Action · Adventure · Action-Adventure

Grand Theft Auto IV: The Complete Edition
Shared: Action · Adventure · Third Person

Red Dead Redemption 2
Shared: Adventure · Action · Shooter