Games like S.P.E.C.T.O.R 01
Games like S.P.E.C.T.O.R 01 include Warframe, STAR WARS™ Battlefront™ II, HELLDIVERS™ 2, Marvel Rivals, and The Callisto Protocol™. We matched them by the tags players give S.P.E.C.T.O.R 01 on Steam (Action, Shooter, Third-Person Shooter, 3D, and Third Person): closest matches first, and among equally close ones the better-known games.

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

STAR WARS™ Battlefront™ II
Shared: Shooter · Third-Person Shooter · Action

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

Marvel Rivals
Shared: Third-Person Shooter · Action · Free to Play

The Callisto Protocol™
Shared: Third-Person Shooter · Shooter · Sci-fi

Grand Theft Auto V Legacy
Shared: Action · Shooter · Third Person

Farlight 84
Shared: Shooter · Third-Person Shooter · Free to Play

The First Descendant
Shared: Third-Person Shooter · Action · Shooter

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

Hitman: Absolution
Shared: Action · Third Person · Third-Person Shooter

STAR WARS™ Battlefront II (Classic, 2005)
Shared: Action · Shooter · Third-Person Shooter

World of Warships
Shared: Shooter · Third-Person Shooter · 3D

Mecha BREAK
Shared: Action · Free to Play · Third-Person Shooter

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

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

Just Cause™ 3
Shared: Action · Third-Person Shooter · Shooter

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

Aimlabs
Shared: Shooter · Action · Third-Person Shooter

Rogue Company
Shared: Shooter · Action · Third-Person Shooter

Snowbreak: Containment Zone
Shared: Third-Person Shooter · Shooter · Action

Max Payne 3
Shared: Action · Third-Person Shooter · Shooter

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

EARTH DEFENSE FORCE 6
Shared: Action · Shooter · Third-Person Shooter

Vanquish
Shared: Action · Third-Person Shooter · Shooter