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Games Like Loopquarium

60+ similar titles based on shared tags and player behavior. Themes include Creature Collector, Cute, Simulation, Fishing.

Loopquarium header art

Loopquarium is an aquarium roguelite where you assemble a school of fish with unique abilities to repel invading apex predators. Start with a group of guppies, grow your population, and balance predator and prey to discover insane combos every run.

Reviews: No user reviews — 50%
Released: Coming soon
Developer: Fellswell
Genres: Action, Adventure, Casual, Indie, Simulation, Strategy
Platforms: Windows, Mac

Similar Games

View all 59 recommendations
  1. #1 Fishing Mega-Game
    96% matchPositive88% of 34 reviews2026
    Dev: Peep
    Windows · Linux

    Fishing Mega-Game takes the joy of a fishing mini-game and crafts it into a larger creature collecting experience. Roam the land for new fishing spots and deploy your favorite fish in search for new playable fish!

    Why similar: Creature Collector 23.3%, Underwater 22.4%, Fishing 19.8%, Action Roguelike 15.9%, Roguelite 10.8%

  2. #2 Angler's Journey
    96% matchNo user reviews
    Dev: VericDev
    Windows

    This idle clicker demands you battle for every catch, from small fry to mighty bosses. Arm yourself with diverse weapons; unlock powerful skills and constant upgrades to complete your massive fish collection.

    Why similar: Underwater 23.3%, Creature Collector 19.1%, Fishing 15.4%, Collectathon 11.4%, Management 9%

  3. #3 Desktank
    95% matchPositive88% of 34 reviews2025
    Dev: Edco Games
    Windows

    A cozy idle aquarium that lives on top of your screen. Watch fish swim, grow, and interact while you work or relax. Desktank turns your desktop into a peaceful underwater world — float it in the corner or let it take over the whole screen. Just sit back and enjoy the calm.

    Why similar: Underwater 23%, Creature Collector 21.9%, Fishing 16.4%, Collectathon 13.2%, Management 9.2%

  4. #4 The Last of the Minnows
    94% matchNo user reviews
    Dev: Wyrmyr Games
    Windows

    The Last of the Minnows is a pixel-art survival simulation where you manage a fragile aquarium ecosystem. Balance oxygen, temperature and contaminants to keep your fish alive. Breed unique traits over generations, adapting to ever-changing conditions. Can you keep them alive for 100 days?

    Why similar: Underwater 36.9%, Creature Collector 16.9%, Management 14.5%, Simulation 10.8%, Incremental 7.3%

  5. #5 King of Freshwater
    94% matchNo user reviews2027
    Dev: Dogfish
    Windows

    "King of Freshwater " is a fish-themed Boss Rush action game featuring intense combat and knockback mechanics. Players control a small fish challenging dozens of larger aquatic predators in brutal battles.

    Why similar: Underwater 31.5%, Creature Collector 28.1%, Action Roguelike 20%, Roguelite 12.8%, Action 2.6%

  6. #6 The Fish Room
    93% matchNo user reviews
    Dev: Pig Fishing Studio
    Windows

    Breed and sell fish to grow your aquarium business. Unlock new species, aquascape tanks, fulfill customer orders and care for your fish in this relaxing first person aquarium simulator.

    Why similar: Underwater 29.1%, Fishing 21.6%, Creature Collector 16.7%, Management 12.4%, Simulation 6.8%

  7. #7 Fish 'n Ships
    92% matchPositive97% of 36 reviews2025
    Dev: Squid Snooze Studio
    Windows

    Take to the seas on your little boat and catch some fish in this 2D cozy fishing experience! Explore the drizzly coastline, upgrade your boat, and bring home the big one! How many fish can you catch?

    Why similar: Underwater 33.2%, Fishing 23.3%, Creature Collector 12.4%, Collectathon 9.2%, Simulation 6.7%

  8. #8 Bottom Dwellers
    91% matchPositive100% of 18 reviews2026
    Dev: JustWastingTime
    Windows

    Bottom Dwellers is a cozy little aquarium that sits at the bottom of your screen. Collect and grow different fishes, discover shrimps and decorate your tank while you work or play on your PC.

    Why similar: Creature Collector 36.7%, Underwater 24.5%, Fishing 22.1%, Simulation 9.1%, Casual 3.7%

  9. #9 Idlequarium
    91% matchMostly Positive71% of 249 reviews2025
    Dev: NutsXPub: Gamersky Games
    Windows

    Idlequarium is a casual simulation game where you raise adorable little fish to earn coins, purchase decorations, and build a fully customized aquarium.The game sits anywhere on your desktop, letting you interact with your live aquarium during work or study breaks.

    Why similar: Underwater 31.5%, Creature Collector 22.2%, Fishing 15.4%, Management 11.1%, Nature 7.4%

  10. #10 Orion Blue
    90% matchNo user reviews2026
    Dev: EXLIX
    Windows

    Orion Blue is a cozy fishing adventure set on a beautiful alien planet. Catch fish, gather resources, and build relationships with the locals. Play actively, or relax and let the game progress with Idle Mode.

    Why similar: Underwater 26.5%, Creature Collector 18.1%, Fishing 17%, Collectathon 10.1%, Management 9.6%

  11. #11 Pocket Aquarium
    89% match3 user reviews100% of 3 reviews2026
    Dev: Creative Name Studios
    Windows · Linux

    Pocket Aquarium is a cozy virtual pet simulator straight out of the 90s! Play minigames, earn money, and expand your collection of fish, tanks, and more!

    Why similar: Creature Collector 31.3%, Underwater 26%, Fishing 25%, Simulation 5.2%, Pixel Graphics 4.6%

  12. #12 Tiny Aquarium: Social Fishkeeping
    88% matchOverwhelmingly Positive96% of 3,640 reviews2025
    Dev: Lunheim StudiosPub: Future Friends Games
    Windows · Mac · Linux
    Median: 6.3 hrsMean: 37.1 hrs≥1hr: 80%

    A happy aquarium that lives at the bottom of your screen! Tiny Aquarium is a social idle simulator that keeps growing, even when offline. Hatch, sell fish, decorate, go fishin’, and visit your friends’ aquariums with bite-sized daily sessions.

    Why similar: Underwater 22%, Creature Collector 20.9%, Fishing 17.4%, Collectathon 12.4%, Management 10.3%

  13. #13 Trapper
    87% matchNo user reviews2026
    Dev: Daruma Daydreams LLC
    Windows

    An animal-catching game made both for and against the hardcore collectors.

    Why similar: Creature Collector 28.8%, Collectathon 18.1%, Fishing 12.7%, Nature 11.7%, Incremental 10.4%

  14. #14 Megaquarium
    89% matchOverwhelmingly Positive95% of 3,759 reviews2018
    Dev: Twice Circled
    Windows · Mac · Linux
    Median: 2.5 hrsMean: 14.9 hrs≥1hr: 67%

    The public aquarium simulator. Design your displays, look after your fish, manage your staff and keep your guests happy! It's all in a day's work as the curator of your very own Megaquarium.

    Why similar: Underwater 36%, Creature Collector 24.3%, Management 13.6%, Fishing 11.4%, Simulation 7.1%

  15. #15 Just Fish: Idle Aquarium
    86% matchNo user reviews
    Dev: RoboLaserCosmoTurtle
    Windows

    Relax in a calm idle incremental aquarium. Buy and feed fish that grow in real time. Sell fish to buy more fry and discover rarer species. Build your oasis: unlock and place decorations, and enjoy fish interacting with them. Your world keeps earning even while you're away

    Why similar: Underwater 31.2%, Creature Collector 22.4%, Fishing 14.9%, Collectathon 11.6%, Nature 6.6%

  16. #16 Fishing Echoes
    86% matchNo user reviews2026
    Dev: DuoBonza
    Windows · Linux

    Fishing Echoes is a fantasy fishing game where you catch elemental fish to save the realm from a world-devouring maelstrom.

    Why similar: Underwater 34.2%, Fishing 22.8%, Creature Collector 17.7%, Collectathon 14%, Simulation 5.2%

  17. #17 Mango's Fisharium
    84% matchVery Positive82% of 302 reviews2025
    Dev: Evrac Studio
    Windows · Mac

    Mango’s Fisharium is a short incremental game about catching unique fishes and displaying them in the Fish Aquarium. Designed to be completed in around 4 hours.

    Why similar: Fishing 22%, Creature Collector 21.4%, Management 13%, Collectathon 11.8%, Incremental 11.7%

  18. #18 Cozy Island Idle
    85% matchMixed69% of 52 reviews2024
    Dev: Overaction Game Studio
    Windows · Mac · Linux

    Cozy Island Idle is a chill fishing idle game where you catch all sort of fantasy fishes to showcase them in an Aquarium to sell them to turn a profit and customize your aquarium and island.

    Why similar: Underwater 33.1%, Creature Collector 22.1%, Fishing 20.7%, Collectathon 11.7%, Simulation 4.7%

  19. #19 Fisher Man
    84% matchPositive100% of 18 reviews2025
    Dev: JHL GAMES
    Windows

    FISHER MAN is a relaxing fishing simulation game. Explore a peaceful world, catch unique fish, and complete quests to unlock new content. Build your collection and enjoy the calm rhythm of fishing at your own pace.

    Why similar: Fishing 31.5%, Creature Collector 26.5%, Collectathon 16.4%, Simulation 11.6%, Nature 10.2%

  20. #20 Joyquarium
    82% matchVery Positive91% of 566 reviews2025
    Dev: Easyfun StudioPub: Gamersky Games
    Windows
    Median: 15.0 hrsMean: 40.8 hrs≥1hr: 85%

    Joyquarium is a relaxing casual fish-raising game. Buy various cute fry and sell them at a high price after they grow up. With the money you earn, you can purchase aquatic plants, driftwood, scenery stone, etc. to decorate your tank (you can freely adjust the color, size, and position).

    Why similar: Underwater 26.4%, Creature Collector 22.4%, Fishing 18.8%, Collectathon 10.9%, Incremental 7.9%

  21. #21 Sea Sniffers
    83% matchNo user reviews
    Dev: Blastmode
    Windows

    Dive! Punch! Catch! Sea Sniffers is a unique take on collecting fish where you play as a seal that throws a mean punch! Upgrade your gear, ship and companions to become the best Sea Sniffer!

    Why similar: Underwater 29.3%, Fishing 21.6%, Creature Collector 21%, Collectathon 12.1%, Nature 6.7%

  22. #22 Vquarium
    82% match3 user reviews100% of 3 reviews2026
    Dev: Pete Karesisto
    Windows · Mac · Linux

    Vquarium is a relaxing incremental-idle game where you grow your own underwater world on your screen overlay with a virtual assistant. Collect rare fish, discover sparkling variants, and decorate your tank while taking care of an adorable assistant!

    Why similar: Underwater 29.1%, Creature Collector 23.4%, Fishing 19.2%, Management 10.4%, Incremental 9%

  23. #23 DAVE THE DIVER
    81% matchOverwhelmingly Positive97% of 159,816 reviews2023
    Dev: MINTROCKET
    Windows · Mac
    Median: 13.5 hrsMean: 27.0 hrs≥1hr: 89%

    DAVE THE DIVER is a casual, singleplayer adventure RPG featuring deep-sea exploration and fishing during the day and sushi restaurant management at night. Join Dave and his quirky friends as they seek to uncover the secrets of the mysterious Blue Hole.

    Why similar: Underwater 34.2%, Fishing 22.1%, Management 15.8%, Roguelite 8.4%, Pixel Graphics 8%

  24. #24 Machorium -Muscle Aquarium Simulator-
    81% matchVery Positive90% of 73 reviews2024
    Dev: NEOLAVIPub: indiegamesjapan
    Windows

    Machorium - Muscle Aquarium Simulator - is a relaxing idle and sandbox game where you can unwind and have fun. Use points generated by cute little decorative muscle men to unlock various items and create your ideal muscle aquarium, Machorium.

    Why similar: Underwater 33.9%, Creature Collector 19.2%, Collectathon 14.8%, Incremental 11.6%, Simulation 7.7%

  25. #25 Master Baiter
    80% matchNo user reviews
    Dev: InSpite
    Windows · Mac

    Sail out on a fishing boat with your homies! Use caught fish as bait to catch bigger fish! Co-operate with your friends to wrangle up the fiercest and most dangerous sea monsters lurking under the surface... All for the sake of solving world hunger!

    Why similar: Underwater 34.1%, Fishing 28.4%, Creature Collector 25.1%, Simulation 9.7%, Action 1.2%

  26. #26 GRAV Fishing
    79% matchNo user reviews
    Dev: Shatterproof Games LTD
    Windows · Mac

    A relaxing fishing adventure where the fish have floated into space. Explore Aquaria, rescue floating sea life with your gravity rod, and restore the planet’s lost ecosystem.

    Why similar: Underwater 29%, Fishing 22.8%, Creature Collector 21.4%, Collectathon 13.7%, Nature 7.8%

  27. #27 Cozy Dive
    79% matchNo user reviews
    Dev: Cuddle Code
    Windows

    Watch a tiny diver explore the ocean in the corner of your screen. Collect sea creatures, upgrade equipment, and unlock new diving spots.

    Why similar: Underwater 32%, Creature Collector 25.5%, Fishing 15.5%, Incremental 11.4%, Nature 7%

  28. #28 Easy Bubbles
    78% matchPositive92% of 36 reviews2025
    Dev: PiqFocus Interactive
    Windows

    Easy Bubbles is a relaxing aquarium simulation filled with cute sea creatures. Manage your aquarium with click and idle mechanics, collect resources and have a pleasant experience in the colorful and peaceful underworld.

    Why similar: Underwater 30.4%, Creature Collector 25.5%, Collectathon 12.5%, Incremental 9.2%, Nature 8.1%

  29. #29 星星水族馆~Star Aquarium
    78% match3 user reviews67% of 3 reviews2025
    Dev: Moedraw
    Windows

    This is a group of cute little fish swimming leisurely at the bottom of the screen while you work. The fish swim, grow and earn stars for you. Use them to buy other cute little fish until the bottom of the screen becomes a colorful ocean world! Start a leisure desktop fish farming journey!

    Why similar: Underwater 41.4%, Creature Collector 30.6%, Incremental 11.9%, Simulation 5%, Pixel Graphics 4.5%

  30. #30 FISH KISSER
    76% match5 user reviews100% of 5 reviews2026
    Dev: xOcarin
    Windows

    FISH KISSER is a roguelike where you explore the bottom of the ocean, fulfilling your greatest fantasy: catching and kissing fish! Buy cards, earn points, and mildly disturb everyone on the island.

    Why similar: Fishing 26.4%, Creature Collector 19.8%, Underwater 18%, Roguelite 16.6%, Strategy 14.9%

  31. #31 Moon Fishies
    77% matchNo user reviews
    Dev: AnionCatPub: AnionCat Studio
    Windows

    Moonfishies is relaxing desktop fish simulator. Customize your dream aquarium, catch new fish and breed unique hybrids!

    Why similar: Creature Collector 32.6%, Underwater 23.5%, Collectathon 18.4%, Fishing 12.2%, Simulation 7.2%

  32. #32 Aquanore
    76% match3 user reviews100% of 3 reviews2026
    Dev: Elerium Studios
    Windows

    A cozy idle aquarium game: collect, breed, and sell fish, shape your tank with decorations, grow your economy, and relax while your fish earn for you.

    Why similar: Creature Collector 33.7%, Underwater 17.8%, Simulation 14.1%, Management 10.7%, Nature 7.7%

  33. #33 Sipho
    77% matchVery Positive85% of 358 reviews2023
    Dev: All Parts Connected
    Windows · Mac · Linux

    Sipho is an action survival game with an intricate building system. Grow your own creature and take over the local ecosystem. Fight, grow, survive, dominate. Play in adventure or sandbox mode.

    Why similar: Underwater 35%, Action Roguelike 29.1%, Roguelite 10.9%, Simulation 7.3%, Strategy 7%

  34. #34 Idle Sailor
    75% matchPositive82% of 22 reviews2026
    Dev: PcZ Games
    Windows · Mac

    Idle Sailor is a relaxing idle adventure where you sail between world destinations, livestream your journey, capture underwater photos of unique fish, and unlock upgrades to make each voyage faster and more rewarding.

    Why similar: Underwater 33.1%, Creature Collector 20.6%, Collectathon 11.8%, Fishing 11%, Simulation 7%

  35. #35 Fish-Click Squad!
    75% matchPositive92% of 37 reviews2025
    Dev: Cool Car Studio
    Windows

    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!

    Why similar: Underwater 34.2%, Creature Collector 30.9%, Collectathon 14.8%, Incremental 11.3%, Simulation 3.7%

  36. #36 方寸海洋物语
    74% matchNo user reviews
    Dev: Bolingogames
    Windows

    《方寸海洋物语》是一款极致追求画面观赏质感,力求还原真实海缸生态的模拟养鱼游戏。工作时它安静地待在屏幕一角,陪你敲代码、写文档;学习累了,抬头看看游动的小鱼,为自己换一口气;你也可以坐在客厅沙发上欣赏这仅属于你的海洋。点点鼠标即可轻松养护,看小丑鱼钻进海葵,繁育各种珍奇鱼种,你的薄荷仙在等你。

    Why similar: Fishing 27.6%, Creature Collector 27%, Collectathon 20.5%, Simulation 8.7%, Nature 6.7%

  37. #37 Fishing Tale
    74% matchPositive88% of 26 reviews2024
    Dev: Rebel Signal
    Windows

    Fishing Tale is a relaxing fishing adventure game where you catch over 40 unique fish across diverse environments like oceans, lakes, and rivers. Customize your character, track your catches in a detailed journal, and enjoy the soothing sounds of nature.

    Why similar: Creature Collector 23.9%, Fishing 23.9%, Collectathon 16.2%, Incremental 11.7%, Nature 8.6%

  38. #38 Deep Hunger
    73% matchNo user reviews2027
    Dev: One Up Plus
    Windows

    A short incremental game about cleaning the ocean, and feeding the insatiable hunger of a deep sea creature.

    Why similar: Underwater 37.2%, Fishing 20%, Incremental 11.7%, Management 9.9%, Simulation 6.9%

  39. #39 SALTWATER
    73% matchPositive100% of 31 reviews2025
    Dev: Lean HogPub: The Zhou Bros
    Windows

    Play as a pistol shrimp and survive waves of enemies while collecting pearls from oysters scattered throughout the map.

    Why similar: Underwater 29.6%, Creature Collector 26.3%, Action Roguelike 17.3%, Roguelite 12.4%, Strategy 5.9%

  40. #40 Little Aquarium
    73% matchMixed45% of 11 reviews2025
    Dev: ManicBuild
    Windows

    Little Aquarium is a relaxing idle game where you grow your own underwater world. Collect rare fish, discover vibrant color variants, and decorate your dream tank!

    Why similar: Underwater 36.6%, Creature Collector 24.2%, Fishing 9.5%, Incremental 7.9%, Simulation 6.6%

  41. #41 Idle Waters
    71% matchVery Positive95% of 387 reviews2025
    Dev: Ignita Games
    Windows
    Median: 43.8 hrsMean: 68.6 hrs≥1hr: 88%

    A relaxing idle fishing game that waits for you at the bottom of your screen. CATCH fish, BUY upgrades, COMPLETE your collection, and DISPLAY them in your aquarium.

    Why similar: Fishing 22.3%, Creature Collector 16.7%, Management 12%, Nature 9.7%, Incremental 8.9%

  42. #42 Scale the Depths
    69% matchVery Positive88% of 1,750 reviews2026
    Dev: Glass Gecko GamesPub: Pretty Soon
    Windows · Mac
    Median: 3.1 hrsMean: 4.6 hrs≥1hr: 89%

    Fish, scale, sell, repeat. Scale the Depths is a casual fishing game built around this simple but satisfying loop. Feed hungry customers, upgrade your gear, and uncover the many secrets hidden beneath the surface.

    Why similar: Underwater 37.7%, Fishing 25.4%, Management 11.8%, Incremental 6.3%, Pixel Graphics 6.2%

  43. #43 Cozy Aquarium
    72% matchNo user reviews
    Dev: Symsie
    Windows · Linux

    Cozy Aquarium is a relaxing Fish Collecting Game. Catch fish and decorate your fish tanks the way you want to!

    Why similar: Creature Collector 35.5%, Fishing 28%, Management 14.7%, Nature 8.5%, Simulation 6.8%

  44. #44 We Love Fish Tanks
    71% matchPositive92% of 13 reviews2025
    Dev: Bondio.li
    Windows · Mac · Linux

    We Love Fish Tanks is a cozy aquarium builder. Kick back & relax, buy, breed, & sell fish (or fish-like things), and decorate your tank exactly how you'd like!

    Why similar: Creature Collector 34.6%, Underwater 32.9%, Fishing 21.7%, Nature 5.5%, Cute 2.1%

  45. #45 Marine
    71% matchNo user reviews2026
    Dev: Brandon JS LeaPub: MJE Solutions
    Windows · Linux

    Dive into nonstop underwater chaos in Marine, a synergetic lane‑defence strategy game where quirky sea creatures battle rival kingdoms to protect their reef! Build your defence, unleash powerful combos, and survive wave after wave in this fast and charming roguelike!

    Why similar: Underwater 46.7%, Action Roguelike 21.7%, Strategy 11.6%, Nature 8.8%, Pixel Graphics 5.2%

  46. #46 Aquarist VR
    72% matchMixed51% of 35 reviews2023
    Dev: FreeMind S.A.Pub: PlayWay S.A.
    Windows

    Get the best aquarium store in town! Create, renew, manage, observe. See if you can create an aquarium empire.

    Why similar: Underwater 28.7%, Creature Collector 19.5%, Fishing 18.4%, Management 10.2%, Nature 8.6%

  47. #47 Shrimp.io
    70% matchVery Positive84% of 268 reviews2024
    Dev: VuVuu
    Windows

    A Shrimp Based Bullet Heaven. Kill creatures, Level up & pick from 3 upgrades to unalive thousands more.

    Why similar: Underwater 28.2%, Action Roguelike 23.3%, Strategy 14.1%, Roguelite 12.2%, Action 6.5%

  48. #48 Zen Aquarium
    68% matchVery Positive95% of 303 reviews2025
    Dev: Astro Cat
    Windows · Mac

    Immerse yourself in the ultimate relaxing aquarium experience. Watch fish glide gracefully through a serene, ever-changing tank—no setup, no stress, just pure tranquility. Enjoy soothing visuals and ambient ASMR sounds as your aquarium comes to life effortlessly. Your peaceful escape awaits!

    Why similar: Underwater 42.1%, Creature Collector 19.7%, Fishing 15.4%, Nature 9.8%, Simulation 7.9%

  49. #49 Little Hooky
    70% matchPositive100% of 11 reviews2024
    Dev: Mossloth
    Windows

    Little Hooky is a tiny fishing game for a little slack off. if there's nothing to stop you now then, Why don't you play a Little Hooky from work.

    Why similar: Creature Collector 31.6%, Fishing 30.7%, Collectathon 18.3%, Pixel Graphics 4.6%, Casual 3.2%

  50. #50 Idle Fishing at Crater Lake
    69% matchNo user reviews
    Dev: ItsGuusy
    Windows · Linux

    Welcome To The Crater! It's been 100 years of drought, but water has returned and with it a flourishing of new life to find! Discover new creatures, customize your aquarium to perfection, and collect them all! Fish right on your desktop with passthrough or enjoy the scenic views of The Crater!

    Why similar: Underwater 29.8%, Creature Collector 23.5%, Fishing 21.5%, Incremental 8.9%, Nature 5.3%

  51. #51 HydroTick: Water Reminder & Aquarium Manager
    68% matchPositive94% of 16 reviews2025
    Dev: RetroArcPub: Rock Paper Publisher
    Windows

    Stay hydrated, relax, and build your dream aquarium! HydroTick reminds you to drink water at your chosen intervals, rewards you with coins, and lets you collect unique fish, rare decorations, and create a soothing aquatic world.

    Why similar: Underwater 30.4%, Creature Collector 22.6%, Fishing 19.8%, Collectathon 13.7%, Nature 7.8%

  52. #52 Acuaria Pet Desktop
    70% match3 user reviews33% of 3 reviews2024
    Dev: MatiasDaille
    Windows

    A beautiful contemplative game that turns your desktop into a pond where you can care for your own fish with a variety of colors and shapes. Design their colors, patterns, and shapes as you watch them grow, reproduce, and pass on their traits to the next generation.

    Why similar: Underwater 48.5%, Creature Collector 23.2%, Simulation 10.5%, Pixel Graphics 9.1%, Casual 5.9%

  53. #53 Desktop Fishes
    67% matchMostly Positive77% of 156 reviews2025
    Dev: Daniel Santalla
    Windows

    A cozy idle aquarium overlay that brings your desktop to life with pixel-art fish. You can hatch, breed, and collect fishes in thousands of genetic combinations. Dress them up with accessories, watch them grow from eggs to adults, and unlock playful upgrades through a skill tree.

    Why similar: Underwater 25.5%, Creature Collector 20.1%, Fishing 17%, Collectathon 11.9%, Management 8.8%

  54. #54 Fishy Business
    68% matchNo user reviews2026
    Dev: Kraken Inkwell
    Windows

    Rent is due and its time to get to business... fishy business. Build your aqua-empire from the ground up, starting from your dormitory bathroom. With the help of your loyal customers (and some fishy guy) you just might be able to afford somewhere nicer.

    Why similar: Underwater 30.5%, Creature Collector 25.7%, Fishing 21%, Simulation 7.9%, Management 7.3%

  55. #55 Captain Whiskers: Incremental Seas
    65% matchVery Positive86% of 909 reviews2026
    Dev: Happy Universe Studios
    Windows · Mac
    Median: 3.9 hrsMean: 4.6 hrs≥1hr: 90%

    5 minutes to get started, play anytime! This is a relaxing fishing-themed incremental game. You will join the Cat Captains to explore global fishing grounds, catch fish, and collect resources. Every rewarding voyage will have you shouting, "One more round!"

    Why similar: Underwater 23.1%, Fishing 19.3%, Incremental 15.9%, Management 11.6%, Collectathon 10.3%

  56. #56 MioAquaria
    67% matchNo user reviews2026
    Dev: Pixellore Inc
    Windows

    Build and manage a cozy underwater sandbox aquarium run by cats. Discover fantasy sea creatures, research upgrades, send expeditions, and balance fish, staff, and visitor needs to become the world’s top aquarium.

    Why similar: Creature Collector 29.8%, Underwater 29.3%, Fishing 19.3%, Management 11.1%, Simulation 5.7%

  57. #57 Chillquarium
    67% matchVery Positive92% of 8,313 reviews2023
    Dev: Ben Reber
    Windows · Mac
    Median: 16.6 hrsMean: 52.0 hrs≥1hr: 89%

    Chillquarium is a cozy and relaxing idle game. Buy fish and raise them in real time, then sell them to turn a profit! Customize your aquarium as you progress from a simple starter tank to your dream setup by filling your collection with rare exotic fish and ultra-rare color variants!

    Why similar: Creature Collector 23.9%, Fishing 19.7%, Underwater 14.9%, Collectathon 14.3%, Incremental 9.5%

  58. #58 Robo Dolphin Escape
    66% match4 user reviews100% of 6 reviews2026
    Dev: NIIIIIIIICO
    Windows · Mac · Linux

    Break out of a top-secret military operation! To enter the portal that leads to your escape, you must thwart an army of fish-like machines and collect their power-ups.

    Why similar: Underwater 57%, Action Roguelike 28%, Pixel Graphics 7.9%, Action 4.4%, Singleplayer 1.5%

  59. #59 Fishlets
    67% matchPositive89% of 37 reviews2024
    Dev: Pixlin
    Windows

    Decorate your own aquariums and care for a variety of fish in Fishlets, a cozy fish-collecting sim! Feed, breed, sell, and collect fish and aquatic critters in the virtual tanks mode. Drop into Adventure mode and progress through 7 unique levels, unlocking even more fish while fending off threats!

    Why similar: Underwater 32.5%, Creature Collector 29.1%, Incremental 11.5%, Nature 8%, Pixel Graphics 6.4%

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