IMHO.

Games like CosmoDreamer

From the popular free game "Outside" comes a dreamy and cute barrage shmups. The visuals are colorful, cute and fantastic, and the game features active gameplay.

2020Action7.99 USDDeck PlayableWindowsby あうとさいど
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Ranked by collaborative filtering across millions of Steam libraries plus content overlap on genres, tags, and developers.

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    Bullet Hell Monday: Black

    This is a high-difficulty bullet hell shooting game and a sequel to "Bullet Hell Monday." It offers an exciting experience for players who demand advanced skills and precise strategies. As a common system, six types of special weapons are equipped, expanding the player's tactical range.

    2023ActionIndie8.99 USDSteam ↗
  2. 2

    Vampire Memories - 吸血鬼的回忆

    This is a SHMUP/STG game that allows anyone to experience and play happily; Games that will allow you to enjoy playing; Games that can make it easy for you to get started with low technical requirements; SHMUP/STG games that have completely different experiences from other games;

    2024ActionIndieCasual4.99 USDSteam ↗
  3. 3

    Space War: Infinity

    Vertical semi-procedural shmup with upgrades, real-time enemy waves, and infinite replayability. Level up your ship, unlock 20+ weapons, defeat 5 bosses, and survive endless bullet-hell combat.

    2019ActionIndieCasual2.99 USDSteam ↗
  4. 4

    Like Dreamer

    A pop and cute bullet-hell shooting game from Cosmo Dreamer "Outside". Both beginners and experts can enjoy speedy and active playing.

    2022Action13.99 USDDeck PlayableSteam ↗
  5. 5

    REDNEG ALLSTARS SWING-BY EDITION

    Cosmo Dreamer Like Dreamer "Outside" is a fantastical and comical boss-rush bullet-hell shooting game remade from a free game. Both beginners and experts can enjoy the intense boss rush.

    2024Action10.99 USDDeck PlayableSteam ↗
  6. 6

    Sektori

    Sektori is an intense, fast paced twin-stick shooter infused with hard hitting techno music. A game where the high-adrenaline gameplay, visuals, and music come together to transport you into another state of consciousness.

    2025Action14.99 USDDeck VerifiedSteam ↗
  7. 7

    Mushihimesama

    Battle huge "Koju" bugs in CAVE's beautiful fantasy shooter, Mushihimesama. Experience the thrill of bullet hell from the masters of the genre as you evade visually stunning shot patterns with thousands of bullets.

    2015Action19.99 USDDeck PlayableSteam ↗
  8. 8

    Nuclear Throne

    Nuclear Throne is a post-apocalyptic roguelike-like top-down shooter. Not 'the final hope of humanity' post-apocalyptic, but 'humanity is extinct and mutants and monsters now roam the world' post-apocalyptic. Can you reach the Nuclear Throne?

    2015ActionIndieRPG11.99 USDDeck VerifiedSteam ↗

Reviewers mention these as similar to CosmoDreamer

Surfaced from review text: when other players write 'if you liked X, try Y', we catch the name and resolve it back to a Steam game.

  1. 1

    NiGHTS Into Dreams

    Slip off into the dream world and go on an aerial adventure as NiGHTS in this classic Saturn remake. Collect Ideya (colored orbs), rack up points, and battle bosses to help Elliot and Claris save Nightopia from Wizeman the Wicked.

    2012AdventureDeck PlayableSteam ↗
  2. 2

    Danmaku Unlimited 2

    Classic Japanese style vertical manic shooting action! Shoot, dodge and explode your way through the second entry in the critically acclaimed Danmaku Unlimited series. Battle through nail-biting bullet patterns and compete for dominance on the global leaderboard!

    2014ActionIndie4.99 USDDeck PlayableSteam ↗
  3. 3

    Danmaku Unlimited 3

    Take to the skies once again as the last defender of humanity against overwhelming odds! Lovingly built to be enjoyed by newcomers and genre veterans alike, Danmaku Unlimited 3 is a perfect medley of the best aspects of classic bullet hell shooters wrapped up in a modern and approachable package.

    2017ActionIndie9.99 USDDeck PlayableSteam ↗

Frequently asked about CosmoDreamer

Does CosmoDreamer run on Steam Deck?
CosmoDreamer is rated Playable on Steam Deck — it runs, but expect some manual adjustments (control remapping, text size, or graphics settings) for the best experience.
How much does CosmoDreamer cost?
CosmoDreamer is listed on Steam at 7.99 USD (current store price; Steam sales may reduce this temporarily).
What games are most similar to CosmoDreamer?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside CosmoDreamer are Bullet Hell Monday: Black, Vampire Memories - 吸血鬼的回忆, Space War: Infinity.
Who developed CosmoDreamer?
CosmoDreamer was developed by あうとさいど.

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 CosmoDreamer.

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Games like CosmoDreamer — top similar games · imho.run