Online co-op Underwater games

Every online co-op Underwater game on Steam we know of, newest first. Add tags or a price band to narrow it down.

Showing 31–40 of 53 games matching Underwater · updated 12 Oct 2026

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
66% of 2,087

Fish around the globe using float, bottom, spinning, or casting gear, and catch over 60 realistic fish species. Play solo or online in normal, realistic, or sandbox mode! Explore stunning locations, switch to an underwater cam, and fill your trophy room!

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Free
Released
Price
Free
Players
👥 2–12 players
Reviews
79% of 107

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!

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$
Released
Price
$ · Cheap
Players
👥 2–5 players
Reviews
30% of 10

Abyss Crew is a multiplayer coop game aboard a steampunk submarine. Each player is a member of the submarine crew - pilot, gunner, sonar, or engineer. Explore the abyss to find precious mineral - but beware, as sprawling menaces lurk in the darkness...

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
92% of 28

Fish-Click Squad! is a casual multiplayer idler where you purchase various aquatic creatures and nurture them to maturity with your friends through clicking and touching earning coins and rewards to unlock more fish and idle features! There is nothing happier than slacking with friends!

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$$
Released
Price
$$ · Standard
Players
👥 Not stated
Reviews
0% of 2

This open-world survival crafting game puts you, an amnesiac protagonist, on a journey to rediscover your true self. Explore islands and oceans, crafting weapons, watercraft, and shelters to survive. Face threats as you uncover the mysteries of your past and reclaim lost memories.

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$$$
Released
Price
$$$ · Expensive
Players
👥 Up to 4 players
Reviews
52% of 202,792

The unbridled force of nature runs wild and relentless, with environments transforming drastically from one moment to the next. This is a story of monsters and humans and their struggles to live in harmony in a world of duality.

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$
Released
Price
$ · Cheap
Players
👥 Not stated
Reviews
100% of 22

Slug Wars is an online multiplayer 3rd-person shooter, where you play as cute Slugs, and after being eliminated you get to choose a power up! Slug Wars has been designed to be more approachable entry to the shooting game genre, and for the best experience we recommend playing with your friends!

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$
Released
Price
$ · Cheap
Players
👥 5–8 players
Reviews
87% of 3,993

Solo or up to 8 players. Get rid of your employer's failed experiments in abandoned underwater labs. Navigate your submarine, avoid abyssal terrors, and remove all corpses.

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