Explore Challenges
About MysteryTwister
Community
Account

Powered by the CrypTool project

© 2009-2026 MysteryTwister

Contact | Legal Notice | Privacy

The Cipher Challenge Contest

379
Challenges
14,840
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
Eugene
Eugene

Solved Level 1 challenge MACs in Orbit

Javantea
Javantea

Solved Level 1 challenge MACs in Orbit

Polaris
Polaris

Solved Level 1 challenge MACs in Orbit

Armin Krauss
Armin Krauss

Solved Level 1 challenge MACs in Orbit

Rogue Rambler
Rogue Rambler

Solved Level 1 challenge MACs in Orbit

Theofanidis
Theofanidis

Solved Level 1 challenge MACs in Orbit

H. Lautenschlager
H. Lautenschlager

Solved Level 1 challenge MACs in Orbit

Piyush Agarwal
Piyush Agarwal

Solved Level 1 challenge MACs in Orbit

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