Duo Control
Two players, one character. One of you moves (Keyboard), the other aims and shoots (Mouse).
$2.99
Co-op games like Underwater DuO
Miss the cute and colorful pull of Underwater DuO? These co-op games could fill that gap nicely. You can bring friends along for most of these.
Ocean Keeper Co-op Drill Multiplayer
Dive into the Ocean Keeper – a cooperative roguelike where four survival miners defend their Mech Spider, fight with endless hordes of monsters, and dig for resources. Team up with your friends, upgrade between waves, and survive the deep caves, full of treasures… if you can.
Colorful, Fast-paced, Replayable
73% of 129 Steam reviews are positive$5.99We Need To Go Deeper
Crew a leaky submarine with two to four co-op friends in a hand-drawn undersea trench that reshuffles every run. One of you pilots, one patches hull breaches, one loads torpedoes, and plans fall apart fast. Worth playing for the shared panic and the laugh when you save the ship anyway.
Cute, Colorful, Fast-paced
86% of 4,655 Steam reviews are positivePlayers online now: 14$15.99Friend Ship
A two-player action shooting game created by students. Survive the onslaught of sharks approaching from 360° with cooperative play!
Colorful, Fast-paced, Tense
71% of 7 Steam reviews are positiveFreeDuo Control
Two players, one character. One of you moves (Keyboard), the other aims and shoots (Mouse). Let's see if you and your friend are really as good a team as you think you are. ⭐
Colorful, Fast-paced
$2.99Archons
Archons is a Roguelite/Survivor game where you control two characters, the Archons- simultaneously! Customize your build and abilities to fit your own unique playstyle and blast your way through enemy parasites and bosses!
Colorful, Fast-paced, Replayable
92% of 442 Steam reviews are positivePlayers online now: 4$9.99SUBS: Sharks And Submarines
Submarines are falling from the sky and it’s up to you to destroy them. Leap from the water, smash helicopters out of the air, purchase and equip unique and dangerous upgrades from the shop, and send your enemies some torpedoes (or lasers).
Colorful, Fast-paced, Replayable
80% of 10 Steam reviews are positive$0.99Entropy Survivors
A sharpshooting space frog rides a sword-swinging mech, and you steer both at once through swarms of aliens. Weapons fire bees, empty shotguns become projectiles, and every 20-minute run stacks upgrades into screen-filling chaos. Play solo or with up to three friends online.
Cute, Colorful, Fast-paced
79% of 501 Steam reviews are positivePlayers online now: 28$3.49Ship of Fools
Ship of Fools is a seafaring roguelite made for two sailors aboard the Stormstrider. You and your co-op friends load cannons, patch the hull and steer around the Everlasting Storm while sea monsters try to turn you into fish food. Cute, colorful and built for teamwork, with 100 plus trinkets to combo each run.
Cute, Colorful, Fast-paced
82% of 5,105 Steam reviews are positivePlayers online now: 132$21.99Bros Survivors
Two players, one body, absolute chaos. Survive enemy hordes in this co-op Survivors-like. Merge with a friend into a giant mech: one controls horizontal movement, the other vertical. Will you coordinate or die trying?
Colorful, Fast-paced, Replayable
100% of 17 Steam reviews are positivePlayers online now: 2Duo Defenders - Tower Defense
Cute and cooperative tower defense game where you and your partner must reload towers with ammunition together.
Cute, Colorful, Fast-paced
100% of 5 Steam reviews are positive$2.99Polygunners
Polygunners is a cross between a twin-stick shooter and an RPG. Upgrade abilities, explore dungeons and towns, and fight bosses to progress through the world. Playing with your friends with local co-op cranks the experience up to 11 for satisfying dynamic gameplay.
Colorful, Fast-paced, Replayable
95% of 114 Steam reviews are positiveFreeShoulders of Giants: Ultimate
Simultaneously control a sword-wielding robot and a gunslinging space frog in Shoulders of Giants, an explosively colourful sci-fi roguelike. Play alone, with a friend, or as part of a four-person team, cutting through waves of enemies on a quest to rescue the galaxy from the forces of Entropy!
Cute, Colorful, Fast-paced
82% of 109 Steam reviews are positive$19.99
Cheaper than Underwater DuO
SUBS: Sharks And Submarines
Submarines are falling from the sky and it’s up to you to destroy them.
80% of 10 Steam reviews are positive$0.99
Entropy Survivors
Control a melee mech and its sharpshooting frog rider at the same time in a colorful bullet heaven roguelike.
79% of 501 Steam reviews are positivePlayers online now: 28$3.49
Duo Defenders - Tower Defense
Cute and cooperative tower defense game where you and your partner must reload towers with ammunition together.
100% of 5 Steam reviews are positive$2.99
Manda Duo
Experience the thrill of fast-paced endless platforming combined with first-person shooting!
100% of 2 Steam reviews are positive$1.99
S.U.B.
Navigate through the dark, deep seas with your best friend to infiltrate the Evil Doctor's Secret Underwater Base © in this two-person local couch…
50% of 4 Steam reviews are positive$1.99
Ambidangerous
Ambidangerous is a top-down shooter that puts your ambidexterity to the test.
100% of 11 Steam reviews are positive$1.99
Underwater hunting
Underwater hunting: Plunge into the underwater world. Your character-a small fish piranha.
94% of 31 Steam reviews are positive$0.99
Kinduo
Kinduo is a local cooperative game where two elemental friends overcome obstacles to return to their island, push boxes, use electricity to connect…
96% of 100 Steam reviews are positive$1.99
BULLET PARTY
The party co-op shoot ’em up! Become the king of the night club! Go alone or group your friends! Shoot the party crashers down!
95% of 73 Steam reviews are positive$0.99
Trianga's Project: Battle Splash 2.0
Full-Physics Water FPS/TPS, Class-based Action-packed Arena Shooter, Run & Gun with Rocket Jump, Single/Coop/Multiplayers, Survive Procedural Waves…
85% of 92 Steam reviews are positive$0.99
Hidden gems like Underwater DuO
SHRIMP GAME: KRILL CONFIRMED
SHRIMP GAME: KRILL CONFIRMED is a solo or multiplayer third-person shooter RPG intro to SHRIMP GAME set in an abyssal realm.
96% of 181 Steam reviews are positivePlayers online now: 2Free
Bang Bang Barrage
Survive the treacherous sea in this quirky multiplayer shooter game! Play solo or team up and fight off Cthulhu's minions.
95% of 781 Steam reviews are positivePlayers online now: 3$7.99
SHRIMP GAME: OVERKRILL
SHRIMP GAME: OVERKRILL is a solo or multiplayer third-person shooter RPG set in an abyssal realm.
89% of 105 Steam reviews are positive$11.99
Archons
Archons is a Roguelite/Survivor game where you control two characters, the Archons- simultaneously!
92% of 442 Steam reviews are positivePlayers online now: 4$9.99
Subterror
Explore abandoned biospheres at the bottom of the ocean, alone or with up to 4 friends.
90% of 400 Steam reviews are positive$7.99
NIDUS
A symbiotic Flower and Wasp struggle to complete their lifecycle, in a challengingly twisted arcade experience.
93% of 223 Steam reviews are positive$8.99
Darkwater
Darkwater puts you and up to three co-op friends in a custom submarine trapped under the ice of an alien moon.
77% of 1,009 Steam reviews are positivePlayers online now: 15$9.99
Murky Divers
Grab up to seven co-op friends, pilot a blind submarine by sonar to an abandoned lab, then swim in to haul out corpses for the shredder.
87% of 3,999 Steam reviews are positivePlayers online now: 29$8.99
Abyssus
Grab up to three co-op friends and fight through a sunken brinepunk kingdom in this fast-paced roguelite FPS.
84% of 5,151 Steam reviews are positivePlayers online now: 198$24.99
Entropy Survivors
Control a melee mech and its sharpshooting frog rider at the same time in a colorful bullet heaven roguelike.
79% of 501 Steam reviews are positivePlayers online now: 28$3.49
Tidal Shock: Off The Hook
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…
79% of 107 Steam reviews are positiveFree
Shoulders of Giants: Ultimate
Simultaneously control a sword-wielding robot and a gunslinging space frog in Shoulders of Giants, an explosively colourful sci-fi roguelike.
82% of 109 Steam reviews are positive$19.99
Newest co-op games like Underwater DuO
Bros Survivors
Two players, one body, absolute chaos. Survive enemy hordes in this co-op Survivors-like.
100% of 17 Steam reviews are positivePlayers online now: 2
DEEP SEAL
DEEP SEAL is a 1–4 player co-op underwater horror game. Dive into dark, labyrinthine caves to recover bodies, find your way through the depths, and…
100% of 2 Steam reviews are positive
SHRIMP GAME: OVERKRILL
SHRIMP GAME: OVERKRILL is a solo or multiplayer third-person shooter RPG set in an abyssal realm.
89% of 105 Steam reviews are positive$11.99
Bugscraper
Welcome to the Bugscraper. In this solo or co-op roguelike shooter, battle floor after floor of enemies, aim for the top and settle the score with…
97% of 29 Steam reviews are positive$9.99
UnfAIr War: Survivors
This is NOT a "forever" roguelike for thousands of hours. It's a game for a few cozy evenings. Download — launch — play immediately.
100% of 2 Steam reviews are positive$7.99
Dino-Ducks Mayhem
Dino-Ducks Mayhem is a twin-stick shooter with bullet heaven vibes, wrapped around duck-builder system, set in a duck-tastic world and all about…
100% of 4 Steam reviews are positive$14.88
SHRIMP GAME: KRILL CONFIRMED
SHRIMP GAME: KRILL CONFIRMED is a solo or multiplayer third-person shooter RPG intro to SHRIMP GAME set in an abyssal realm.
96% of 181 Steam reviews are positivePlayers online now: 2Free
Darkwater
Darkwater puts you and up to three co-op friends in a custom submarine trapped under the ice of an alien moon.
77% of 1,009 Steam reviews are positivePlayers online now: 15$9.99
The Hull
A short, tense 1–4 player co-op descent game built around slow, tactical combat, scarce resources, and rising pressure.
72% of 29 Steam reviews are positive$9.99
Ocean Keeper Co-op Drill Multiplayer
Dive into the Ocean Keeper – a cooperative roguelike where four survival miners defend their Mech Spider, fight with endless hordes of monsters, and…
73% of 129 Steam reviews are positive$5.99
Umigame
Embody a water spirit and fight through a corrupted world in this action co-op roguelite for 1-2 players.
72% of 46 Steam reviews are positive$5.99
Tentacle Tango
Team up with a friend to swing the inseparable octopuses, Ten & Tango, through treacherous terrains to defeat the evil Chef Murgó.
100% of 22 Steam reviews are positivePlayers online now: 1$14.99