18 3D · Underwater games your group can play together online, including Subnautica 2, Deep Blue Sushi, and SHRIMP GAME: OVERKRILL.
All games: 18
Subnautica 2 is an underwater survival adventure set on an all-new alien world, developed by Unknown Worlds. Play alone or with friends in 4-player co-op. Adapt to survive by building custom bases and crafting tools. Explore the unknown to uncover the mysteries hidden within the depths.
Deep Blue Sushi is a casual 1–5 player co-op adventure where you explore the ocean, catch fresh fish, prepare sushi, serve customers, and grow your restaurant while uncovering the secrets of the mysterious Deep Blue.
SHRIMP GAME: OVERKRILL is a solo or multiplayer third-person shooter RPG set in an abyssal realm. Pilot your SHRIMP platform to fight giant sea monsters, master elemental classes, and unearth secrets in a 6-person co-op campaign, or just krill your friends in multiplayer PVP!
Choose your loadout, blast through the corrupted denizens of a sunken civilization, and wield godly powers in Abyssus – a fast-paced 1-to-4 players FPS and roguelite brinepunk adventure.
Play as different fish, devour opponents in the ruthless underwater world of survival of the fittest, and evolve your abilities.
It's a wet and wild PvP shooter for 2-12 players! Hunt down foes on high-speed torpedoes, Outmaneuver rivals with 360° tactics, and master 4 high-stakes game modes in sprawling underwater arenas. Always free to play, never pay to win!
Get ready for a Waterworld-themed survival game with modular base building, sunken city scavenging, crafting, base defense, and invasions of NPC clans for resources and territory. Ready for the water apocalypse?
Are you ready, kids? The cult classic is back, faithfully remade in spongetastic splendor! Play as SpongeBob, Patrick and Sandy and show the evil Plankton that crime pays even less than Mr. Krabs.
Combat in Shark Attack Deathmatch 2 is savage, gritty, and brutal. Players hunt each other down in various game modes with the constant threat of terrifying sharks joining in on the bloodshed. Tear divers apart as you take on the role as the ocean's top apex predator, The Great White.
IronWolf VR is a roomscale submarine game playable either singleplayer or online co-op with motion controls. Built from the ground up for VR, each part of the submarine has been crafted for an optimal VR experience.
This is the Free Non-VR version of IronWolf VR. A co-op submarine game with a light touch on realism, making the submarine sim genre accessible to a wider audience.
In the seas of the distant future, humans have all but disappeared. In your current, newly-awakened state, you are no more than a piece of seafood. However, you have been blessed with the talent for leading your allies into battle. Do whatever it takes to become the Ace of Seafood.
Abyss of Neptune is a survival horror game set in the deep seas of the Bermuda Triangle. You are sent to investigate a mysterious underwater signal, but there is more to it than meets the eye. Do you have what it takes to survive the abyss?
Trapped in a sinking submarine, two players must communicate through walkie-talkies to solve puzzles, complete tasks, navigate the depths, and escape before time runs out.
You will see the creation of new lives... Capture enemies and fire them back at their allies as enormous beams of energy in this horizontally scrolling shooting game, featuring 5 versions of G-Darius with new features, enhancements, and Steam exclusive extras!
Namako (Sea cucumbers) will save the Earth—NAMAKORIUM is a chaotic, cooperative multiplayer RTS game for up to four players. Command the “cleaners of the sea” —Namako left behind by humanity and work together to clean up the polluted oceans!
FULL METAL COFFIN is a 3D co-op submarine simulator. Crew your vessel with up to 4 players. Load the torpedoes, dodge incoming fire, and eliminate the enemy.
Clash claws and flip opponents belly-up in physics-based crab battles! Combine dual-wielded weaponry with multiple fighting stances to create a custom fighting style. Bash, blast, scoop and pummel enemies onto their backs to achieve victory!