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The Crypto Challenge Contest

371
Challenges
13,303
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
belimicus
belimicus

Solved Level 1 challenge Caesar Encryption

belimicus
belimicus

Solved Level 1 challenge Original Caesar Cipher

Robert
Robert

Solved Level 2 challenge The Fialka Challenge – Part 3

Shomon
Shomon

Solved Level 1 challenge Number Sequence

Stephen Thompson
Stephen Thompson

Solved Level 1 challenge The Last Note

Stephen Thompson
Stephen Thompson

Solved Level 1 challenge A disguised code

Clandestino
Clandestino

Solved Level 1 challenge Modified Caesar Cipher

max
max

Solved Level 1 challenge Number Sequence

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:
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