Games like Exit Lab -15 Rooms-
Games like Exit Lab -15 Rooms- include The Room 4: Old Sins, The Room, The Room Three, Blue Prince, and The Room VR: A Dark Matter. We matched them by the tags players give Exit Lab -15 Rooms- on Steam (Adventure, Escape Room, Investigation, Puzzle, and Hidden Object): closest matches first, and among equally close ones the better-known games.

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

The Room
Shared: Puzzle · Adventure · Singleplayer

The Room Three
Shared: Adventure · Puzzle · Singleplayer

Blue Prince
Shared: Puzzle · Investigation · Singleplayer

The Room VR: A Dark Matter
Shared: Adventure · Puzzle · Investigation

Servant of the Lake
Shared: Adventure · Puzzle · Escape Room

Escape Simulator
Shared: Puzzle · Escape Room · Adventure

The Room Two
Shared: Puzzle · Adventure · Hidden Object

The House of Da Vinci
Shared: Puzzle · Hidden Object · Adventure

Underground Blossom
Shared: Adventure · Escape Room · Puzzle

Samsara Room
Shared: Adventure · Puzzle · Escape Room

The Mr. Rabbit Magic Show
Shared: Adventure · Escape Room · Puzzle

Palindrome Syndrome: Escape Room
Shared: Escape Room · Adventure · Hidden Object

We Were Here
Shared: Escape Room · Puzzle · Adventure

Chants of Sennaar
Shared: Adventure · Puzzle · Singleplayer

Between Time: Escape Room
Shared: Escape Room · Adventure · Puzzle

We Were Here Too
Shared: Escape Room · Puzzle · Investigation

Little Nightmares II
Shared: Adventure · Puzzle · Singleplayer

Syberia 3
Shared: Adventure · Puzzle · Singleplayer

Stray
Shared: Adventure · Singleplayer · Puzzle

We Were Here Together
Shared: Puzzle · Escape Room · Adventure

Rusty Lake Paradise
Shared: Adventure · Puzzle · Singleplayer

Deponia
Shared: Adventure · Puzzle · Singleplayer

Sherlock Holmes: Crimes and Punishments
Shared: Adventure · Investigation · Puzzle