Cipher Command
Crack WWII Ciphers
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
You are an intelligence agent stationed at a secret facility. Intercepted enemy transmissions are flooding in — and only you can crack them.
Black Signal is a historical cryptography puzzle game that puts you inside the world of WWII code-breaking. Decrypt authentic ciphers used in real military operations, uncover classified intelligence, and learn
the craft that changed the course of history.
CLASSIFIED MISSIONS
Work through 30 missions across three clearance levels — CONFIDENTIAL, SECRET, and TOP SECRET. Each opens with a full intelligence briefing, and each solved cipher reveals what actually happened in history.
7 AUTHENTIC CIPHER SYSTEMS
Every cipher was used in real military operations — from the ancient Caesar shift to the legendary Enigma machine. Break them all using interactive, historically accurate decryption tools.
- Caesar Cipher
- Substitution Cipher
- Rail Fence Cipher
- Vigenere Cipher
- Playfair Cipher
- ADFGVX Cipher
- Enigma-Inspired Cipher
FEATURES
- Hands-on cipher tools for every encryption type
- Guided tutorials that teach real cryptanalysis
- Progressive difficulty from CONFIDENTIAL to TOP SECRET
- Historical context for every mission and cipher
- 15 achievements from Field Agent to Master Cryptanalyst
- 4 bonus mission packs: Pacific Theater, D-Day, Eastern Front, Cold War
- No ads. No data collection.
From Lepercon Studios — Decrypt History.
Added narration to the puzzle solve.
Corrected audio bug causing distortion when skipping mission briefs or outcomes.
The developer, Daniel McCarthy, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Daniel McCarthy
- Size
- 346.6 MB
- Category
- Puzzle
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 13.0 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+
- In-App Purchases
Yes
- Premium Puzzles $3.99
- Cold War $3.99
- Eastern Front $2.99
- D-Day $2.99
- Pacific Theatre $2.99
- Copyright
- © 2025 Lepercon Studios