CosmoDreamer
Released Oct 2020
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.
100% positive · 150 reviews
Done
All announced content has been released
Medium confidence
Done
All announced content has been released
Medium confidence
Where to buy
Steam $7.99
Can't confirm — worth a look
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Evaluation
CosmoDreamer launched on October 2, 2020 and has received two major content updates since then: Ver2.00 on January 15, 2021 (which added extra stages, new gallery illustrations, and other content) and Ver2.10 on August 26, 2022 (which added Steam Achievements, online rankings, and a Practice Mode). These two updates represent the substantive post-launch content additions to the game.
Since August 26, 2022, the developer's posts for CosmoDreamer have been limited to smaller feature patches and bug fixes — controller improvements, UI fixes, and Chinese language support added in September 2025. No new gameplay content has been added to the game itself since Ver2.10.
The developer (Outside) has clearly moved on to new projects. A demo for "REDNEG ALLSTARS SWING-BY EDITION" was announced in January 2024 and the full game released in June 2024, and in August 2025 the developer announced a demo for another new title, "Fox Flare Night." Neither announcement mentions additional content coming to CosmoDreamer.
There are no unreleased DLC entries, no announced future content for the game, and no roadmap. The developer has not stated the game is "finished," but their post-launch content additions concluded with Ver2.10, and their attention has shifted to new titles. The ongoing maintenance patches (most recently September 2025) show the developer still supports the game technically, but no new gameplay content appears to be planned.
Evidence
Ver2.10 update added Steam Achievements, online rankings, and Practice Mode — the second and most recent major post-launch content addition.
Ver2.00 update added extra stages, new gallery illustrations, and various gameplay adjustments — the first major post-launch content addition.
Media
Details
Developer
Publisher
あうとさいど
Achievements
40
Platform
Windows
Controller
partial support
Steam Deck
Playable
Players
Single-player
About this game
A new dreamy shoot 'em up game from Outside, the makers of other popular shooting games.
Play through the game's unique combination of cute, colorful, whimsical visuals and bullet hell action.
No need to be shy in this shooting game.
The game is perfectly balanced so that everyone from absolute beginner to professional sniper can join in the fun.
A dreamy pop-art shooting game. A young girl sets off on a journey across the universe driven by pure curiosity.
Venture on as you face various hurdles, fierce foes, new friends, and difficult goodbyes.
Just what sort of dazzling sights will you set your eyes on in this game?
One snowy night, when relaxing in her room, a girl named Mu Yumegiri looked out her window to see a most puzzling sight...
The children of the town were all floating up into the sky! But where could they be headed?
Curiosity getting the best of her, Mu quickly changed her clothes and leaped from the window.
She simply had to know why the children were flying and why she, too, could fly.
Without an ounce of hesitation, the ever-dreaming Mu flew higher and further into the sky.
・Customize the main character's skills to play to your liking.
・81 total combinations...or even more?!
・Play three different difficulty levels depending on your skill. Those who are really skilled can take on a fourth level.
・When you complete a stage, the next stage will be unlocked. Make your way through all the stages little by little.
・The hidden Trial Mode allows you to play with old-school arcade rules.
・This game is based on a "Dream Level" offense and defense system.
・Level up your Dream Gauge by collecting items.
・Use Dream Level to activate your ultra-special Dream Magic move. You can also use Dream Level to cancel out any mistakes.
・Get illustrations added to the Gallery as you make your way through the game. You may even get a better picture of what this game world is like!
・Features a 40-achievement system. Do you have what it takes to earn them all?
・Online ranking feature! (Note: requires connection to the internet.)
Play through the game's unique combination of cute, colorful, whimsical visuals and bullet hell action.
No need to be shy in this shooting game.
The game is perfectly balanced so that everyone from absolute beginner to professional sniper can join in the fun.
A dreamy pop-art shooting game. A young girl sets off on a journey across the universe driven by pure curiosity.
Venture on as you face various hurdles, fierce foes, new friends, and difficult goodbyes.
Just what sort of dazzling sights will you set your eyes on in this game?
One snowy night, when relaxing in her room, a girl named Mu Yumegiri looked out her window to see a most puzzling sight...
The children of the town were all floating up into the sky! But where could they be headed?
Curiosity getting the best of her, Mu quickly changed her clothes and leaped from the window.
She simply had to know why the children were flying and why she, too, could fly.
Without an ounce of hesitation, the ever-dreaming Mu flew higher and further into the sky.
・Customize the main character's skills to play to your liking.
・81 total combinations...or even more?!
・Play three different difficulty levels depending on your skill. Those who are really skilled can take on a fourth level.
・When you complete a stage, the next stage will be unlocked. Make your way through all the stages little by little.
・The hidden Trial Mode allows you to play with old-school arcade rules.
・This game is based on a "Dream Level" offense and defense system.
・Level up your Dream Gauge by collecting items.
・Use Dream Level to activate your ultra-special Dream Magic move. You can also use Dream Level to cancel out any mistakes.
・Get illustrations added to the Gallery as you make your way through the game. You may even get a better picture of what this game world is like!
・Features a 40-achievement system. Do you have what it takes to earn them all?
・Online ranking feature! (Note: requires connection to the internet.)
Are these done yet?
Last evaluated Jun 24, 2026
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