Games like Secret Files: Tunguska
Games like Secret Files: Tunguska include The Room, The Room 4: Old Sins, The Room Three, The Room Two, and Syberia. We matched them by the tags players give Secret Files: Tunguska on Steam (Adventure, Point & Click, Female Protagonist, Mystery, and Puzzle): closest matches first, and among equally close ones the better-known games.

The Room
Shared: Point & Click · Mystery · Puzzle

The Room 4: Old Sins
Shared: Point & Click · Adventure · Mystery

The Room Three
Shared: Adventure · Point & Click · Mystery

The Room Two
Shared: Point & Click · Mystery · Puzzle

Syberia
Shared: Adventure · Point & Click · Female Protagonist

Chants of Sennaar
Shared: Adventure · Puzzle · Point & Click

Syberia 3
Shared: Adventure · Point & Click · Puzzle

Syberia: The World Before
Shared: Adventure · Point & Click · Puzzle

Rise of the Tomb Raider™
Shared: Adventure · Female Protagonist · Singleplayer

Tomb Raider Game of the Year
Shared: Adventure · Female Protagonist · Singleplayer

Syberia II
Shared: Adventure · Point & Click · Female Protagonist

The Rewinder
Shared: Adventure · Mystery · Puzzle

Underground Blossom
Shared: Adventure · Point & Click · Puzzle

Kathy Rain
Shared: Adventure · Point & Click · Female Protagonist

Rusty Lake Paradise
Shared: Point & Click · Adventure · Puzzle

Servant of the Lake
Shared: Adventure · Point & Click · Puzzle

Twelve Minutes
Shared: Adventure · Mystery · Puzzle

Fran Bow
Shared: Point & Click · Adventure · Puzzle

Storyteller
Shared: Point & Click · Adventure · Puzzle

Portal 2
Shared: Singleplayer · Puzzle · Female Protagonist

The White Door
Shared: Adventure · Point & Click · Puzzle

The House of Da Vinci
Shared: Point & Click · Mystery · Puzzle

Heaven's Vault
Shared: Adventure · Female Protagonist · Mystery

Monument Valley
Shared: Adventure · Puzzle · Singleplayer