76%Strong matchIn Sink
90%67690% positive reviews, Very Positive across 676 reviews·Colorful · Escape Room
—







Team up with a friend to reach a lost submarine and prevent the outbreak of war. Work together on two devices to solve increasingly challenging puzzles, where each of you has your own unique role to play. 2 players: 1 buys the game, the other uses the free Companion App

The latest edition in the How 2 Escape series, How 2 Escape: Lost Submarine has you and a partner work together to locate a missing submarine and prevent the start of a global war.

An important allied military base has been captured by enemy forces, prompting the government to preemptively order the launch of a torpedo to reclaim it - despite the potential for countless allied deaths.
However, after further internal discussions and negotiations with the enemy, the government cancelled the strike that could spark a potential global war. The only problem is "The Triumphant," the submarine carrying the torpedo, is out of communication range and no one can confirm if the cancellation orders have reached the submarine.
To prevent war, the government has tasked its two best experts, Haurée and Leroy, two strategic masterminds of the submarine fleet, to locate “The Triumphant” before time runs out and spread the latest information. These experts will face a reality they did not expect. Underwater, the startling torpedo decision broke out, igniting a moral dilemma among the sailors.

Put your communication and puzzle-solving skills to the test as you and a partner work together to prevent the start of war! Each of you has a crucial role to play that requires logic, coordination, observation and, above all, communication!
As player one, your job is to locate and investigate the inside of the submarine, where you’ll explore and interact with the environment.
Your friend is tasked with using the dedicated free companion app* to gather additional information so you both can solve the puzzles together.
*Get the free How 2 Escape: Lost Submarine Companion App on smartphone.

Features:
Steam data © 2026 Valve Corporation. Trademarks are property of their respective owners.
All matches
Finding similar games…
In SinkShares Puzzle · Logic · Escape Room , adds Colorful90% · 676 positive reviews76%Strong match—
Escape SimulatorShares Puzzle · Escape Room · Mystery , adds First-Person95% · 11k positive reviews72%Strong match—
Escape Simulator 2Shares Puzzle · Hidden Object · Logic , adds First-Person92% · 5k positive reviews72%Strong match—
We Were Here ForeverShares Puzzle · Co-op Campaign · Escape Room , adds Fantasy91% · 15k positive reviews73%Strong match—
We Were Here Expeditions: The FriendShipShares Puzzle · Team-Based · Mystery , adds Emotional90% · 24k positive reviews72%Strong match—
We Were Here TogetherShares Puzzle · Co-op Campaign · Escape Room , adds Exploration82% · 18k positive reviews71%Strong match—All matches
The best games like How 2 Escape: Lost Submarine are In Sink, Escape Simulator, Escape Simulator 2, We Were Here Forever, and We Were Here Expeditions: The FriendShip.
Match on: filter matches for How 2 Escape: Lost Submarine by tag
Filters all matches
65%+Strong matches