Games like Thief Gold (1999)
Games like Thief Gold (1999) include Dishonored, Thief II: The Metal Age, Thief: Deadly Shadows, Dishonored 2, and Thief. We matched them by the tags players give Thief Gold (1999) on Steam (Stealth, Classic, First-Person, Atmospheric, and Immersive Sim): closest matches first, and among equally close ones the better-known games.

Dishonored
Shared: Stealth · First-Person · Steampunk

Thief II: The Metal Age
Shared: Stealth · Classic · Atmospheric

Thief: Deadly Shadows
Shared: Stealth · Atmospheric · First-Person

Dishonored 2
Shared: Stealth · First-Person · Steampunk

Thief
Shared: Stealth · First-Person · Action

BioShock™
Shared: Atmospheric · First-Person · Steampunk

METRO 2033 Redux
Shared: Atmospheric · First-Person · Horror

BioShock™ Remastered
Shared: Atmospheric · First-Person · Horror

A Plague Tale: Innocence
Shared: Stealth · Atmospheric · Singleplayer

Outlast
Shared: First-Person · Atmospheric · Horror

Half-Life 2
Shared: Classic · Action · First-Person

METRO Last Light Redux
Shared: Atmospheric · First-Person · Action

BioShock Infinite
Shared: First-Person · Action · Singleplayer

Amnesia: The Bunker
Shared: Stealth · Atmospheric · Horror

Metro Exodus
Shared: Atmospheric · First-Person · Singleplayer

Dark Messiah of Might & Magic
Shared: First-Person · Action · Classic

Dishonored®: Death of the Outsider™
Shared: Stealth · First-Person · Action

Black Mesa
Shared: First-Person · Action · Classic

Prey
Shared: Immersive Sim · Atmospheric · First-Person

Five Nights at Freddy's: Security Breach
Shared: First-Person · Stealth · Horror

Gloomwood
Shared: Stealth · Immersive Sim · Atmospheric

BioShock® 2
Shared: Atmospheric · First-Person · Action

Arx Fatalis
Shared: First-Person · Classic · Immersive Sim

Alien: Isolation
Shared: Stealth · Horror · Atmospheric