Koshin StudioDanmaku Maker
Build your own bullet-hell stages.
Survive the ones people around the world have made.
A game for iPhone and iPad, available on the App Store (free; extra patterns and items are one-time purchases). The game is fully translated into 10 languages: English, Japanese, Simplified and Traditional Chinese, Korean, Spanish, French, German, Brazilian Portuguese and Russian. Requires iOS 17.0 or later.
Open in the App Store Try it in your browser (free)
No install needed to try it: the browser version lets you play sample stages and build your own with three patterns (it works as a free bullet hell maker on its own).
What it is
A bullet-hell (danmaku) shooter where you build stages, publish them, and play stages made by players around the world. To play, drag anywhere on the screen: movement is relative, so your finger never hides your ship. Survive until time runs out, defeat the boss, and so on.
There are four ways to play: survive, defeat the boss (auto-fire chips away its HP), damage race, and boss rush (chain scenes such as mid-boss → minions only → final boss).
Create
- Pick bullet patterns such as ring, spiral, aimed, rain and sweeping fan, and place up to 8 emitters. Tune color, speed, interval, angle and pattern direction.
- Choose the boss size and look, minion looks, shot style, music, and bullet and background looks for each stage.
- Looping previews show your bullets in action while you edit.
- With Pattern Maker (one-time purchase), draw a line with your finger and bullets follow it at the speed you drew.
- To publish, you must clear your own stage. Impossible stages never go out.
How the patterns are calculated is explained, with live demos, in how bullet-hell patterns work.
Play together
- Browse world stages by Popular, New, Hard and Rising; filter by clear condition or search by stage name.
- Search by stage ID and share stages by link.
- Rankings for clear time and damage.
- Likes, attempts and clear rate show how popular and how hard a stage is.
- 30 official sample stages to start with, from easy to hard.
Price and ads
Free to download, and every stage can be played without paying. Purchases add creation tools (shot styles, pattern packs, looks, Pattern Maker) and remove ads; all are one-time. A Lifetime Pack includes everything.
Ads appear when you choose to revive after being hit (once per play) and as a banner at the bottom of the menu. There is no ad at the start of every stage.
FAQ
Where can I get it?
On the App Store, for iPhone and iPad. There is no Android version, but there is a free browser trial (no install, no sign-up).
Do I need to sign in?
Not to play. Publishing, liking and reporting stages use Sign in with Apple.
Are any stages locked behind a purchase?
No. Purchases add patterns and looks for building stages. Stages made with paid items can be played by everyone.
How it is made
The interface is SwiftUI and the play screen is SpriteKit. Bullet movement is computed in a separate Swift package, and the same code lets a bot play every official stage automatically to confirm it can be cleared. Publishing and rankings run on Firebase.
App support, terms and privacy: Support / Terms / Privacy (pages for the app)