Games like Secrets of Thoth
Games like Secrets of Thoth include Outer Wilds, Firewatch, Fallout 4, Blue Prince, and What Remains of Edith Finch. We matched them by the tags players give Secrets of Thoth on Steam (Adventure, Puzzle, Exploration, 3D, and First-Person): closest matches first, and among equally close ones the better-known games.

Outer Wilds
Shared: Exploration · Adventure · Puzzle

Firewatch
Shared: Adventure · Atmospheric · First-Person

Fallout 4
Shared: Exploration · Adventure · Singleplayer

Blue Prince
Shared: Puzzle · Exploration · Singleplayer

What Remains of Edith Finch
Shared: Adventure · Exploration · Atmospheric

Riven
Shared: Adventure · Puzzle · Exploration

The Talos Principle
Shared: Puzzle · First-Person · Singleplayer

Quern - Undying Thoughts
Shared: Adventure · Puzzle · Exploration

Stray
Shared: Adventure · Exploration · Singleplayer

Indiana Jones and the Great Circle
Shared: Puzzle · First-Person · Adventure

Portal 2
Shared: Puzzle · Singleplayer · First-Person

The Witness
Shared: Puzzle · Exploration · First-Person

The Room 4: Old Sins
Shared: Puzzle · Adventure · Singleplayer

Rise of the Tomb Raider™
Shared: Adventure · Singleplayer · Exploration

FAR: Lone Sails
Shared: Adventure · Exploration · Atmospheric

Tomb Raider Game of the Year
Shared: Adventure · Singleplayer · Exploration

Amnesia: Rebirth
Shared: Puzzle · First-Person · Adventure

MiSide
Shared: First-Person · 3D · Story Rich

COCOON
Shared: Adventure · Puzzle · Exploration

INFRA
Shared: Puzzle · Exploration · Adventure

Call of the Sea
Shared: Adventure · Puzzle · First-Person

Chants of Sennaar
Shared: Adventure · Puzzle · Singleplayer

Myst
Shared: Adventure · Puzzle · Exploration

PEAK
Shared: Adventure · Exploration · First-Person