IMHO.

Games like Plesiotopia

If Plesiotopia is your kind of game, the closest matches are Dinogotchi, 我的钓鱼世界2 and Molluscarium — picked from the ranked list below. Each pick is ranked by what players of this game also play, shared genres and tags, and review-mined similarity — not a generic popularity list.

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About Plesiotopia: A wholesome marine sanctuary sim, where you take care of giant sea reptiles from the dinosaur era. Nurse ichtyosaurs, plesiosaurs and mosasaurs, train them for the wild, then search the Pacific Ocean for a suitable marine ecosystem where you can release them.

2027IndieSimulationWindowsby Pleistogames
Plesiotopia — Steam game cover

Players who liked Plesiotopia also play

Steam players who put hours into Plesiotopia also tend to own these titles — a signal called collaborative filtering. imho.run cross-references millions of library ownership patterns to surface games whose real audiences overlap, regardless of whether their genre tags match.

  1. Dinogotchi

    WHY THIS

    Top pick for Plesiotopia fans by collaborative filtering across millions of Steam libraries. Shares Simulation with Plesiotopia.

    Dinogotchi is a tamagotchi-like game featuring cute dinosaurs. Take care, evolve, have fun and give lots of love to your little jurassic friends!

    2021SimulationCasual1.99 USDSteam ↗
  2. 我的钓鱼世界2

    WHY THIS

    Second-strongest match for Plesiotopia fans by collaborative filtering across millions of Steam libraries. Shares Simulation with Plesiotopia.

    永久免费写实多人钓鱼模拟沙盒,支持单人野钓、 四人组队休闲野钓、20~ 50 人自定义大型联机赛事、私人鱼塘养成,数百种真实鱼类生态模拟。《我的钓鱼世界 2》是国产写实钓鱼沙盒续作,实操滑漂、飞铅、跑铅专业钓组,自定义赛事规则同台比拼渔获,野外垂钓收集鱼种、鱼塘繁育培育稀有品种,三种游玩模式随心切换,官方长期更新全新水域、钓法与赛事内容。

    2026SimulationFree To PlayCasualFreeSteam ↗
  3. Molluscarium

    WHY THIS

    Third-strongest match for Plesiotopia fans by collaborative filtering across millions of Steam libraries. Shares Indie and Simulation with Plesiotopia.

    Relax and collect over 500 unique molluscs in this cozy idle game. Watch larvae grow into stunning adults in real-time, customize vibrant aquatic habitats across 9 themed packs, and discover rare species from garden snails to deep-sea cephalopods.

    2026IndieSimulationCasualSteam ↗
  4. Easy Bubbles

    WHY THIS

    Ranked #4 for Plesiotopia fans by collaborative filtering across millions of Steam libraries. Shares Indie and Simulation with Plesiotopia.

    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.

    2025IndieSimulationCasual3.59 USDSteam ↗
  5. Ecosystem Architect

    WHY THIS

    Ranked #5 for Plesiotopia fans by collaborative filtering across millions of Steam libraries. Shares Indie and Simulation with Plesiotopia.

    In Ecosystem Architect, build the ecosystem of your dreams and let your imagination run wild. With a vast selection of foliage, animals, and prehistoric creatures, mix-and-match to your heart's content and watch your environment come to life as they interact in an in-depth simulation.

    2026StrategyIndieSimulationSteam ↗
  6. Creatura

    WHY THIS

    Ranked #6 for Plesiotopia fans by collaborative filtering across millions of Steam libraries. Shares Indie and Simulation with Plesiotopia.

    Seed, Breed, Create. From single cell organisms to complex ecosystems. Evolve every part of your own unique aquarium / terrarium by applying scientifically accurate principles of natural and artificial selection, in Creatura - ultimate Virtual Evolution Vivarium Simulator.

    2021IndieSimulationCasual14.99 USDDeck PlayableSteam ↗
  7. Dinosaurium

    WHY THIS

    Ranked #7 for Plesiotopia fans by collaborative filtering across millions of Steam libraries. Shares Indie and Simulation with Plesiotopia.

    Relax and collect over 500 unique dinosaurs in this cozy idle game. Watch hatchlings grow into towering giants in real-time, customize prehistoric habitats across 9 themed packs, and discover rare species from tiny raptors to mighty sauropods.

    2026IndieSimulationCasualSteam ↗
  8. GLOOPALAXY

    WHY THIS

    Ranked #8 for Plesiotopia fans by collaborative filtering across millions of Steam libraries. Shares Indie and Simulation with Plesiotopia.

    Collect and study strange aquatic creatures in Gloopalaxy! Discover new life forms, create the perfect ecosystem for their well-being, and complete all kinds of objectives to earn your diploma.

    2026IndieSimulationSteam ↗

Free alternatives

Free-to-play games that recommended players of this title also tend to enjoy.

  1. Helltaker

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Plesiotopia.

    Helltaker is a short game about sharply dressed demon girls.

    2020IndieAdventureFree To PlayFreeDeck PlayableSteam ↗
  2. Ultimate Custom Night

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Plesiotopia.

    Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!

    2018ActionIndieFree To PlayFreeSteam ↗
  3. Bongo Cat

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and Simulation with Plesiotopia.

    Bongo cat needs your help. Bongo cat needz more hatz!!! Every time you press a key, Bongo cat will punch your taskbar. Type, click, play, work to collect more points. Which hats will you find?

    2025IndieSimulationMassively MultiplayerFreeDeck PlayableSteam ↗
  4. The Murder of Sonic the Hedgehog

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and Simulation with Plesiotopia.

    Sonic the Hedgehog...was murdered!? Get to the bottom of the mystery in this brand-new adventure!

    2023IndieSimulationFree To PlayFreeDeck PlayableSteam ↗
  5. The Looker

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Plesiotopia.

    You wake up, alone, on a strangely familiar island full of puzzles that will frustrate and annoy you.

    2022IndieFreeDeck PlayableSteam ↗
  6. Sheepy: A Short Adventure

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Plesiotopia.

    A Short Handcrafted Pixel Art Platformer that follows Sheepy, an abandoned plushy brought to life. Sheepy: A Short Adventure is the first short game from MrSuicideSheep.

    2024IndieAdventureFree To PlayFreeDeck PlayableSteam ↗
  7. missed messages.

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and Simulation with Plesiotopia.

    ‘goth gf’s iPhone’ airdrops you - accept or decline? A love/horror story about life, death, & memes.

    2019IndieSimulationFree To PlayFreeDeck PlayableSteam ↗
  8. Awaria

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Plesiotopia.

    Awaria is a short game about working in haunted maintenance tunnels.

    2024ActionIndieFree To PlayFreeDeck PlayableSteam ↗

Frequently asked about Plesiotopia

What games are most similar to Plesiotopia?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Plesiotopia are Dinogotchi, 我的钓鱼世界2, Molluscarium.
Who developed Plesiotopia?
Plesiotopia was developed by Pleistogames.

imho.run ranks Steam game alternatives using a mix of collaborative filtering (ALS / iALS / EASE / LightGCN), content scoring over genres, categories, Steam tags, developers, and publishers, plus AI-extracted vibes mined from review text. The page above is generated in seed mode anchored on Plesiotopia.

For library-aware picks tuned to your specific taste, sign in with Steam on the home page.