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The Crypto Challenge Contest

367
Challenges
12,986
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

Challenge your knowledge

MysteryTwister challenges your knowledge in cryptography and let's you explore new areas

Learn, Hack & Connect

Solve challenges and connect with other users on Discord

Enter the Hall of Fame

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