BUNKER PROTOCOL: Reactor Core
Escape the Underground Bunker
Free · Designed for iPad. Not verified for macOS.
You wake up alone in a sealed underground shelter. The door is locked. The lights flicker. Your only way out is to solve every puzzle the bunker throws at you.
BUNKER PROTOCOL: Reactor Core is a fully 3D escape room experience designed for mobile. Explore every corner of a detailed underground bunker, examine objects, collect items, and piece together the solution to escape.
FEATURES
- Immersive 3D Environment: Explore a richly detailed underground bunker rendered in full 3D. Rotate your view, walk around, and examine objects up close.
- Multiple Interconnected Puzzles: Solve a sequence of brain-teasing challenges, from valve alignments and symbol safes to wire repairs and cipher dials. Each puzzle unlocks the next.
- Observation-Based Gameplay: Every clue you need is hidden somewhere in the shelter. No trivia, no outside knowledge required. Just look, think, and solve.
- Item Collection & Combination: Pick up tools and key items scattered throughout the bunker. Combine them to create new solutions and unlock hidden mechanisms.
- Sequential Puzzle Progression: Puzzles unlock one by one in a carefully designed order. Restore power, crack codes, repair circuits, and ultimately find your way to freedom.
- Hint System: Stuck on a puzzle? Use the built-in hint system to get a nudge in the right direction without spoiling the full solution.
- Bilingual Support: Play in English or Japanese with full localization.
HOW TO PLAY
Tap to look around and interact with objects in the room. Examine everything, collect useful items, and solve puzzles in sequence. Each solved mystery brings you one step closer to escaping the bunker.
THE CHALLENGE
The bunker holds many secrets. A locked terminal. A sealed door. Valves that need the right sequence. A safe with mysterious symbols. Wires that need mending. Can you piece together every clue and find your way out?
Download now and put your puzzle-solving skills to the test. Escape the bunker. Crack the protocol.
Ratings & Reviews
Improved the glow on interactive objects to make them easier to spot in dark areas. Warning signs now light up too.
The developer, Yuji Sakurai, 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 Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yuji Sakurai
- Size
- 125.5 MB
- Category
- Puzzle
- 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
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026 ystydy