Explore Challenges
About MysteryTwister
Contributors and partnersLinks
Community
Discord ServerHall of Fame
Account

Powered by the CrypTool project

© 2009-2025 MysteryTwister

Contact | Legal Notice | Privacy

We redesigned MysteryTwister, enjoy! Feedback

The Crypto Challenge Contest

372
Challenges
13,587
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 immortalized in the Hall of Fame.
Challenges in four levels

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

Recent solves
Martin Pescador
Martin Pescador

Solved Level 1 challenge Monoalphabetic substitution with camouflage — Part 4

Martin Pescador
Martin Pescador

Solved Level 2 challenge Monoalphabetic substitution with camouflage — Part 3

Patrick Foster
Patrick Foster

Solved Level 1 challenge Reserve Hand Procedure — Part 1

disc_42
disc_42

Solved Level 2 challenge Factorization Cipher — Part 2

Martin Pescador
Martin Pescador

Solved Level 2 challenge Monoalphabetic substitution with camouflage — Part 2

Claude Vaillancourt
Claude Vaillancourt

Solved Level 2 challenge Spanish Strip Cipher — Part 1

Kaz
Kaz

Solved Level 1 challenge An Invisible Message

Terence
Terence

Solved Level 2 challenge Advent Challenge — Part 4

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:
0