ISUD Zero
Neon bullet-hell boss rush
Free · Designed for iPad. Not verified for macOS.
Dodge readable bullet patterns, graze for Phase Pulse, and chase clean weekly scores against the Pattern Engine.
Dodge readable bullet patterns, graze for Phase Pulse, and chase clean weekly scores against the Pattern Engine.
Description:
I.S.U.D. Zero is a portrait bullet-hell boss rush built around clean reads, a tiny fair hitbox, and fast retry mastery.
Enter the simulation chamber, learn each boss pattern, graze close calls to charge Phase Pulse, and chase cleaner clears across The Instructor, Mirror Cadet, Twin Array, and The Cartographer. Every run is short, sharp, and score-driven.
Bosses move, mutate, and escalate through multiple phases. The ship only takes damage at the red core, so the chaos stays readable even when the screen blooms with bullets.
Features:
- Precision drag controls for portrait play
- Fair red-core hitbox with optional callout
- Graze scoring and Phase Pulse screen clears
- Four multi-phase bosses with distinct patterns and visual escalation
- Five additional boss slots marked Coming Soon
- Difficulty options, persistent best scores, and ranks
- Game Center weekly and all-time high score leaderboards
- Neon arcade presentation with original audio hooks
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
The developer, Suwitcha Sugthana, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Suwitcha Sugthana
- Size
- 125 MB
- Category
- Games
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Frequent
Cartoon or Fantasy Violence
Infrequent
Guns or Other Weapons
- Copyright
- © 2026 Suwitcha Sugthana
