Explore Challenges
About MysteryTwister
Community
Account

Powered by the CrypTool project

© 2009-2026 MysteryTwister

Contact | Legal Notice | Privacy

The Cipher Challenge Contest

380
Challenges
15,110
Active members
You like riddles? Then this is your place!
MysteryTwister is a cipher contest, where you can solve cryptographic riddles (challenges) of different difficulty levels. If you are successful, you will be inducted into the Hall of Fame.
Challenges in four levels

Four degrees of difficulty, from pen & paper to complex mathematical problems

Recent solves
okaycrypt
okaycrypt

Solved Level 1 challenge Caesar Encryption

okaycrypt
okaycrypt

Solved Level 1 challenge Number Sequence — Part 2

🤖
haris

Solved Level 1 challenge A hidden word — Part 2

haris
haris

Solved Level 1 challenge A hidden word

haris
haris

Solved Level 1 challenge Number Sequence — Part 2

haris
haris

Solved Level 1 challenge Original Caesar Cipher

haris
haris

Solved Level 1 challenge Number Sequence

haris
haris

Solved Level 1 challenge A disguised code

Learn, Hack & Connect

Solve challenges and connect with other users on Discord

Challenges in four levels

Four degrees of difficulty, from pen & paper to complex mathematical problems

Enter the Hall of Fame

Master challenges in four levels and secure your spot in the Hall of Fame

Start exploring the challenges

Our 7 most solved challenges