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The Crypto Challenge Contest

374
Challenges
14,135
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
Nikolas D.
Nikolas D.

Solved Level 2 challenge Partial Key Exposure with RSA — Part 1

Pamphile
Pamphile

Solved Level 1 challenge Number Sequence — Part 5

Alain Collignon
Alain Collignon

Solved Level 2 challenge The Fialka Challenge – Part 3

Alain Collignon
Alain Collignon

Solved Level 2 challenge The Fialka Challenge – Part 2

Georgius Stolte
Georgius Stolte

Solved Level 1 challenge Wheatstone Cryptograph — Part 1

Phillip Hicks
Phillip Hicks

Solved Level 2 challenge Partial Key Exposure with RSA — Part 1

Patrick Foster
Patrick Foster

Solved Level 1 challenge ADFGVX — Part 1

Alain Collignon
Alain Collignon

Solved Level 2 challenge The Fialka Challenge – Part 1

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
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