IMHO.

Games like Mothiary

If Mothiary is your kind of game, the closest matches are Whimsy Koi, Mammalarium and Space Catnips — 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 Mothiary: An idle game about collecting moths.

2026SimulationCasual5.99 USDWindows · macOS · Linuxby Denver
Mothiary — Steam game cover

Players who liked Mothiary also play

Steam players who put hours into Mothiary 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. Whimsy Koi

    WHY THIS

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

    Whimsy Koi is a cozy idle game where you manage calming koi ponds. Collect various whimsical koi fish and decorate your ponds however you want. Just relax and enjoy the tranquil experience.

    SimulationSteam ↗
  2. Mammalarium

    WHY THIS

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

    Relax and collect over 500 unique mammals in this cozy idle game. Watch babies grow into magnificent adults in real-time, customize warm woodland habitats across 9 themed packs, and discover rare species from tiny shrews to great whales.

    2026IndieSimulationCasualSteam ↗
  3. Space Catnips

    WHY THIS

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

    Space Catnips is an incremental game where you harvest catnips from alien planets and showcase them in your bar to attract a wide variety of space cats!

    2026IndieSimulationCasualSteam ↗
  4. Lepidarium

    WHY THIS

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

    Relax and collect hundreds of unique butterflies and moths in this cozy idle game. Watch caterpillars transform from larva to chrysalis to winged beauty, customize lush greenhouses, and discover rare species from monarchs to atlas moths.

    2026IndieSimulationCasual6.39 USDDeck PlayableSteam ↗
  5. Pip sellfish

    WHY THIS

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

    Catch fish by drawing circles around them, sell them in Pip's little beach shop, and reinvest everything. Fish, sell, upgrade, repeat. A cozy fishing incremental game.

    2026SimulationCasualSteam ↗
  6. Critter Caboodle

    WHY THIS

    Ranked #6 for Mothiary fans by collaborative filtering across millions of Steam libraries. Shares Casual with Mothiary.

    Watch and play with quirky critters as they generate loads of money for you in a unique idler/creature collector hybrid.

    IndieCasualSteam ↗
  7. Amphibarium

    WHY THIS

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

    Relax and collect hundreds of unique frogs and salamanders in this cozy idle game. Watch tadpoles undergo metamorphosis in real-time, customize lush terrariums, and discover rare species. Let your vivarium thrive in the background while you work or study. Start your collection today!

    2026IndieSimulationCasual7.99 USDSteam ↗
  8. Tiny Egg Clicker

    WHY THIS

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

    An idle pet-collecting clicker game that keeps you company at the bottom of your screen. Click your egg to help it hatch. Grow your collection of pets to unlock upgrades and rarer eggs. Relax to chill Lofi music while you play at your own pace. Will you hatch the shiny variant of each pet?

    IndieSimulationCasualSteam ↗

Cheaper alternatives

Games in the same vein priced at least 40% below Mothiary at current Steam store prices.

  1. Buckshot Roulette

    WHY THIS

    Priced ~50% under Mothiary on Steam right now. Shares Simulation with Mothiary.

    Play Russian roulette with a 12-gauge shotgun. Four enter. One leaves. Roll the dice with your life. Good luck!

    2024ActionIndieSimulation2.99 USDSteam ↗
  2. The Test

    WHY THIS

    Priced ~67% under Mothiary on Steam right now. Shares Simulation with Mothiary.

    You will answer a series of questions that will reveal truths from deep within. These questions may make you uncomfortable, but with great knowledge comes great sacrifice. Can you make it all the way through The Test, and if you do, are you sure you want the answers you seek?

    2020IndieAdventureSimulation1.99 USDDeck VerifiedSteam ↗
  3. Blood and Bacon

    WHY THIS

    Priced ~83% under Mothiary on Steam right now. Shares Casual with Mothiary.

    This Co-op Shooter , has Day and Night levels, multiple maps, players will take on 25 enemy types and numerous bosses, like Gargantuan Monsters and Minibosses every 10 days as you explore, shoot and run for your life against the onslaught of porcine monstrosities.

    2016ActionAdventureCasual0.99 USDSteam ↗
  4. Placid Plastic Duck Simulator

    WHY THIS

    Priced ~67% under Mothiary on Steam right now. Shares Simulation and Casual with Mothiary.

    The ultimate high-tech rubber duck simulation, Placid Plastic Duck brings you dangerous levels of relaxation. With chill music, dreamy 3D graphics, and many different happy ducks, your only priority is to float around. Zero Ducks given.

    2022SimulationCasual1.99 USDDeck VerifiedSteam ↗
  5. Nodebuster

    WHY THIS

    Priced ~50% under Mothiary on Steam right now. Shares Simulation and Casual with Mothiary.

    Nodebuster is a short, experimental incremental game about busting nodes and destroying reality.

    2024StrategyIndieSimulation2.99 USDDeck PlayableSteam ↗
  6. Peggle Deluxe

    WHY THIS

    Priced ~83% under Mothiary on Steam right now. Shares Casual with Mothiary.

    Take your best shot with energizing arcade fun! Aim, shoot, clear the orange pegs, then sit back and cheer as 10 whimsical teachers guide you to Peggle greatness.

    2007Casual0.99 USDDeck PlayableSteam ↗
  7. shapez

    WHY THIS

    Priced ~83% under Mothiary on Steam right now. Shares Simulation and Casual with Mothiary.

    shapez is an easy-going, minimalistic factory building game about the automation of shapes through extraction and satisfying production lines. Adapt to increasingly complex shapes and grow your factory across an infinitely expanding map. Your only limitation is your creativity!

    2020StrategyIndieSimulation0.99 USDDeck PlayableSteam ↗
  8. Superflight

    WHY THIS

    Priced ~50% under Mothiary on Steam right now. Shares Casual with Mothiary.

    Superflight is an intense, easy to learn wingsuit game with an infinite number of beautiful procedurally generated maps. A great game to relax for half an hour and chase your latest highscore!

    2017ActionSportsIndie2.99 USDDeck PlayableSteam ↗

Free alternatives

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

  1. Bongo Cat

    WHY THIS

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

    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 ↗
  2. The Murder of Sonic the Hedgehog

    WHY THIS

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

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

    2023IndieSimulationFree To PlayFreeDeck PlayableSteam ↗
  3. Indigo Park: Chapter 1

    WHY THIS

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

    Explore the abandoned childhood wonder of Indigo Park! Guided by Rambley the Raccoon, help restore power to the destroyed amusement park while you run from the reason it shut down.

    2024ActionIndieAdventureFreeDeck PlayableSteam ↗
  4. Sheepy: A Short Adventure

    WHY THIS

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

    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 ↗
  5. Our Life: Beginnings & Always

    WHY THIS

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

    A twenty-dollar bill, four summers, fifteen years, and a one of a kind life. Create an experience that’s all your own in this near-fully customizable visual novel where you grow from childhood to adulthood with the lonely boy next door.

    2020IndieFree To PlayCasualFreeSteam ↗
  6. missed messages.

    WHY THIS

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

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

    2019IndieSimulationFree To PlayFreeDeck PlayableSteam ↗
  7. NGU IDLE

    WHY THIS

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

    NGU Idle is a Free To Play Idle game that's full of weird humor, tons of upgrades and hundreds of hours of content! Try out NGU Idle today and experience the joy of Numbers Going Up!

    2019IndieAdventureSimulationFreeDeck PlayableSteam ↗
  8. Travellin Cats in Paris

    WHY THIS

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

    Find 100 cats hidden in Paris, France in this cute hand-drawn hidden object game by Travellin Cats - the original viral hidden cat game creator!

    2023IndieFree To PlayCasualFreeDeck VerifiedSteam ↗

Frequently asked about Mothiary

How much does Mothiary cost?
Mothiary is listed on Steam at 5.99 USD (current store price; Steam sales may reduce this temporarily).
What games are most similar to Mothiary?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Mothiary are Whimsy Koi, Mammalarium, Space Catnips.
Who developed Mothiary?
Mothiary was developed by Denver.

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 Mothiary.

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