Single-player games like Discoveries of the Deep
Below are 13 single-player Steam games similar to Discoveries of the Deep, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Discoveries of the Deep page.
Ranked picks
- 1
Search for the Titanic
Single-player alternative to Discoveries of the Deep — playable solo, no multiplayer required. Shares Simulation with Discoveries of the Deep.
As an inexperienced oceanographer, you must build your skills, reputation, crew, and resources along your journey to mount an expedition to find the lost Titanic. Experience the challenges, dangers and excitement of scientific underwater exploration!
- 2
subROV : Underwater Discoveries
Single-player alternative to Discoveries of the Deep — playable solo, no multiplayer required. Shares Simulation with Discoveries of the Deep.
Pilot a remotely operated submarine and explore the oceans! Defy the darkness and crushing pressure of the deeps as you chart unknown regions and study new species of ocean life.
- 3
Barotrauma
Single-player alternative to Discoveries of the Deep — playable solo, no multiplayer required. Shares Simulation with Discoveries of the Deep.
Barotrauma is a 2D co-op submarine simulator – in space, with survival horror and RPG elements. Steer your submarine, complete missions, fight monsters, fix leaks, operate machinery, man the guns and craft items, and stay alert: danger in Barotrauma doesn’t announce itself!
- 4
Aquarium Designer
Single-player alternative to Discoveries of the Deep — playable solo, no multiplayer required. Shares Simulation with Discoveries of the Deep.
Aquarium Designer gives you an opportunity to create the aquarium of your dreams! Become a professional whose job is to design it, build it, and fill it with the various underwater wildlife! All types, all sizes - your creativity is your only limit!
- 5
Sub Command
Single-player alternative to Discoveries of the Deep — playable solo, no multiplayer required.
Take charge of the most deadly modern-day submarines in the world - three distinct submarines across two unique and challenging campaigns. Utilize cutting-edge sensor and weapon technology to locate, track and destroy the enemy - even deliver Tomahawk missiles to inland targets.
- 6
Ecosystem
Single-player alternative to Discoveries of the Deep — playable solo, no multiplayer required. Shares Simulation with Discoveries of the Deep.
Create virtual lifeforms whose development is shaped by a deep simulation of evolution. Guide them as they fight, mate, and adapt to the environment you have built. All the creatures in the trailer evolved on their own in the game!
- 7
Silent Hunter® III
Single-player alternative to Discoveries of the Deep — playable solo, no multiplayer required. Shares Simulation with Discoveries of the Deep.
The king of submarine simulations returns with an all-new 3D engine, new crew command features, and more realistic WWII naval action than ever before. The movie-like graphics and simple, tension-filled gameplay make this the perfect game for the realism fanatic and the casual gamer.
- 8
Beyond Blue
Single-player alternative to Discoveries of the Deep — playable solo, no multiplayer required. Shares Simulation with Discoveries of the Deep.
Beyond Blue is a single-player narrative adventure that takes you deep into our planet’s beating blue heart. Explore the awesome wonder and unbounded mystery that exists within the world’s ocean.
- 9
Corridor 7: Alien Invasion
Single-player alternative to Discoveries of the Deep — playable solo, no multiplayer required.
This terrifying 1990s sci-fi first-person shooter from Capstone Software has you venturing deep into the dark and twisting test chambers of Corridor 7 to combat a hostile takeover of Earth.
- 10
Operation Body Count
Single-player alternative to Discoveries of the Deep — playable solo, no multiplayer required.
Capstone Software’s classic first-person shooter built on an upgraded Wolfenstein 3D engine brings the heat with 40 levels of intense action. Struggle to the top against hordes of bad guys – it’s time to put that training to the test, soldier!
- 11
Witchaven
Single-player alternative to Discoveries of the Deep — playable solo, no multiplayer required.
Witchaven is a first-person fantasy slasher set in a dark medieval times. Dare to enter this 3D Hell... Dare to enter Witchaven!
- 12
Witchaven II: Blood Vengeance
Single-player alternative to Discoveries of the Deep — playable solo, no multiplayer required.
Continue the story of the knight Grondoval in this first-person fantasy slasher. Get ready for bloody encounters with vile creatures and vicious warriors. Stop an evil witch from carrying a titular blood vengeance in revenge for him having slain her sister.
- 13
Grandmaster Chess
Single-player alternative to Discoveries of the Deep — playable solo, no multiplayer required.
Whether you’re a beginner or a veteran, this fully featured chess game from Capstone has all the tools and features you need to learn and master the game of chess. Challenge an opponent with five adjustable skill levels from beginner to grandmaster.