Single-player games like Europa One
Below are 8 single-player Steam games similar to Europa One, 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 Europa One page.
Ranked picks
- 1

The Kaiyo Mission
Single-player alternative to Europa One — playable solo, no multiplayer required. Shares Indie and Adventure with Europa One.
Control a submarine or a diver into the depths of unknown underwater worlds and take photographs of alien animals, plants and artefacts. Continue your journey through this casual, side-scroller, exploration game and collect stars to unlock more secrets before travelling to an alien home planet.
- 2

Plasticalypse - Submarine Adventures
Single-player alternative to Europa One — playable solo, no multiplayer required. Shares Adventure and Casual with Europa One.
A journey of the last ocean cleaner submarine that is tasked to restore the ecosystem of a dying earth. "Plasticalypse: TrashSub Adventures“
- 3

Sonorous | Deep Down Below
Single-player alternative to Europa One — playable solo, no multiplayer required. Shares Indie and Adventure with Europa One.
SONOROUS – Deep Down Below is an unforgiving underwater first-person survival game set in a dystopian world. Find your sunken research to save humanity from an eternal life on the open sea in a continuous fight for survival.
- 4

Under The Waves
Single-player alternative to Europa One — playable solo, no multiplayer required. Shares Indie and Adventure with Europa One.
Stan, a professional diver in the North Sea, is struggling to overcome a life-changing loss during an extended mission underwater. Stuck in his self-imposed solitude, he starts to experience strange events and will have to make the most significant choice of his life...
- 5

Submarine VR
Single-player alternative to Europa One — playable solo, no multiplayer required. Shares Indie and Adventure with Europa One.
Submarine VR takes you on a adventure-filled underwater simulation experience! Dive deep and cruise through the endless uncharted nature of the ocean and you will see clownfish, dolphins, penguins and mysterious sea animals. Get close to the sea surface and sail in the open sea with your cruise ship
- 6

Insiders
Single-player alternative to Europa One — playable solo, no multiplayer required. Shares Indie and Adventure with Europa One.
Welcome to the dangerous micro world hidden inside the human body. Pilot an advanced microship through the bloodstream, brain and kidneys. Mine resources, fight microbes, craft ship modules and weapons, build bases, discover new microorganisms and find a cure for cancer. Don’t get eaten!
- 7

I Thalassa
Single-player alternative to Europa One — playable solo, no multiplayer required. Shares Adventure with Europa One.
Immerse yourself in an alien ocean in this open-world survival game. Explore the biomechanical depths, tame alien creatures, pilot submarines, and uncover the mysteries of the alien entity known as Thalassa.
- 8

Ocean Pressure
Single-player alternative to Europa One — playable solo, no multiplayer required. Shares Indie and Adventure with Europa One.
Ocean Pressure is a singleplayer game where you as an old scientist piloting your handmade submarine in the bottom of the ocean. Your mission is explore the ocean and collect required data with help of your submarine.