About Mật Thư Online
Do you love the thrill of deciphering a hidden message? Do you want to challenge your logical thinking like a real detective? Welcome to Online Cipher – the pinnacle of cipher puzzle games! Online Cipher offers hundreds...
Do you love the thrill of deciphering a hidden message? Do you want to challenge your logical thinking like a real detective? Welcome to Online Cipher – the pinnacle of cipher puzzle games!
Online Cipher offers hundreds of levels from beginner to expert. Here, you'll have access to classic and modern cipher types such as:
- Morse code, Semaphore, Caesar cipher, Vigenere cipher...
- Substitution and transposition ciphers.
- Logical metaphors and general knowledge.
HIGHLIGHTED FEATURES:
- 🧩 100+ Levels: Increasingly challenging, from beginner to the most mind-bending ciphers.
- 💎 Economic System: Accumulate diamonds when you solve correctly to purchase support items.
- 💡 Hint Library: Don't worry when you're stuck! Use "Hint" items to get valuable clues.
- 🛠️ Create your own cipher: Have a great idea? Create your own puzzle and challenge the community (Unique creative feature).
- 🎨 Beautiful interface: Modern Neon Mystery style, giving a professional and mysterious feel.
WHY SHOULD YOU PLAY CIPHERS ONLINE?
1. Brain training: Improve your logical thinking, analytical, and problem-solving skills.
2. Learning through play: Get acquainted with real-world cipher types commonly used in scouting and detective work.
3. Entertainment anytime: Play offline or online, perfect for relaxation and daily practice.
Get ready to become a decoding master! Download Ciphers Online now and prove your IQ today!
Previous Versions
Here you can find the changelog of Mật Thư Online since it was posted on our website on 2023-04-01 18:31:23.
The latest version is and it was updated on 2026-06-29 14:52:33. See below the changes in each version.
Mật Thư Online version
Updated At: 2026-04-19
Disclaimer
Official Google Play Link
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