IMHO.

Games like What Was That?!

If What Was That?! is your kind of game, the closest matches are Tails & Talons, ON&OFF and Slot or Not — 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 What Was That?!: A cozy-spooky roguelite deckbuilder where you play as a household pet exploring a home full of mysterious encounters after dark.

2026StrategyIndieRPGWindows · macOSby Oleksandra Dotsenko
What Was That?! — Steam game cover

Players who liked What Was That?! also play

Steam players who put hours into What Was That?! 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. Tails & Talons

    WHY THIS

    Top pick for What Was That?! fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with What Was That?!.

    The tower gets stronger. So does your hand. Every card is an attack, a spell, or both. Chain the right combo and turn a scratch into a killing blow. Play as one of a crew of furry adventurers who descend into an eldritch tower, each with their own reasons, one shared goal: reach the bottom.

    2027StrategyIndieAdventureSteam ↗
  2. ON&OFF

    WHY THIS

    Second-strongest match for What Was That?! fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with What Was That?!.

    ON&OFF is a turn-based strategy game where you manipulate pieces on a grid to trigger explosive chain reactions. Toggle pieces ON to attack, defend, and heal. Read the enemy's telegraphed intents, unleash powerful skills, and master the board to survive!

    2026StrategyIndieFree To PlayFreeSteam ↗
  3. Slot or Not

    WHY THIS

    Third-strongest match for What Was That?! fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with What Was That?!.

    Slot or Not is a turn-based slot machine battling adventure. Fight evil fruits alongside your battle buddy slot machine to save your village. Spin your destiny and grab the precious loot in a fast-paced, colorful adventure.

    2026StrategyIndieRPG6.29 USDDeck VerifiedSteam ↗
  4. Hunter's Moon: A Sovereign Syndicate Adventure

    WHY THIS

    Ranked #4 for What Was That?! fans by collaborative filtering across millions of Steam libraries. Shares Strategy and RPG with What Was That?!.

    A Victorian Steampunk Roguelite Deckbuilder. Choose from four characters with unique cards and abilities. Customize your deck and character as you investigate a mysterious plague. Battle corrupted beasts and bosses in turn-based combat to unlock powerful relics and enchanted tarot cards.

    2025StrategyAdventureRPG15.99 USDDeck PlayableSteam ↗
  5. Become the Moon

    WHY THIS

    Ranked #5 for What Was That?! fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with What Was That?!.

    Become the Moon is a challenging, deckbuilding auto battler. Choose from 10 unique characters, each with their own distinct playstyles. Assemble a team of powerful minions & cast cosmic spells where every run takes you one step closer to the moon.

    2025StrategyIndie10.19 USDDeck PlayableSteam ↗
  6. As We Descend

    WHY THIS

    Ranked #6 for What Was That?! fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with What Was That?!.

    The apocalyptic roguelike deckbuilder with squad sculpting and deep tactics. Recruit the right units and outmaneuver titanic foes on dangerous expeditions. Build up allies and resources in the feudal Vault-City. Can you survive all the perils that await the last bastion of humanity?

    2025StrategyIndieRPG13.39 USDDeck PlayableSteam ↗
  7. Brawl To The West

    WHY THIS

    Ranked #7 for What Was That?! fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with What Was That?!.

    "Join this hilarious auto-battler! Equip gear, grow fruit trees, and tame monsters to build your team. Choose unique characters or battle others in ranked mode—every run is fresh! Weaklings perish; victors take all. Will you go the farthest? Dive in now!"

    2025StrategyIndieCasual8.99 USDDeck PlayableSteam ↗
  8. Dream of Corpse Lady

    WHY THIS

    Ranked #8 for What Was That?! fans by collaborative filtering across millions of Steam libraries. Shares Strategy and Indie with What Was That?!.

    Cards, battle! Someone woke up the sleeping Corpse Lady... Perhaps, the world needs to pay a price for the awakening... In this game, you will play the role of the awakened Corpse Lady, try various strange construction combinations, discover powerful opponents, and then knock them all down!

    2026StrategyIndieAdventure9.99 USDDeck PlayableSteam ↗

Free alternatives

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

  1. Life is Strange - Episode 1

    WHY THIS

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

    Episode 1 now FREE! Life is Strange is an award-winning and critically acclaimed episodic adventure game that allows the player to rewind time and affect the past, present and future.

    2015ActionAdventureFreeDeck PlayableSteam ↗
  2. Helltaker

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with What Was That?!.

    Helltaker is a short game about sharply dressed demon girls.

    2020IndieAdventureFree To PlayFreeDeck PlayableSteam ↗
  3. Ultimate Custom Night

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with What Was That?!.

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

    2018ActionIndieFree To PlayFreeSteam ↗
  4. Bongo Cat

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with What Was That?!.

    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 ↗
  5. ENA: Dream BBQ

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with What Was That?!.

    Experience surreal environments and inexplicable characters as ENA in a new wild world.

    2025IndieAdventureFreeDeck VerifiedSteam ↗
  6. The Murder of Sonic the Hedgehog

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with What Was That?!.

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

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

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with What Was That?!.

    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 ↗
  8. The Looker

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with What Was That?!.

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

    2022IndieFreeDeck PlayableSteam ↗

Frequently asked about What Was That?!

What games are most similar to What Was That?!?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside What Was That?! are Tails & Talons, ON&OFF, Slot or Not.
Who developed What Was That?!?
What Was That?! was developed by Oleksandra Dotsenko and published by TessaraOxygen.

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 What Was That?!.

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