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The Crypto Challenge Contest

368
Challenges
13,026
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
jiuman
jiuman

Today at 11:36 AM

pksi4e
pksi4e

Yesterday at 10:58 AM

Solved Level 1 challenge Original Caesar Cipher

pksi4e
pksi4e

Yesterday at 10:47 AM

Solved Level 1 challenge Modified Caesar Cipher

ENC2
ENC2

Yesterday at 10:33 AM

Solved Level 1 challenge Number Sequence — Part 2

Robert
Robert

Yesterday at 10:30 AM

Solved Level 2 challenge The Hutton Cipher – Part 1

ENC2
ENC2

Yesterday at 10:25 AM

Solved Level 1 challenge Number Sequence

Mrs X
Mrs X

Yesterday at 10:22 AM

Solved Level 1 challenge Number Sequence

pksi4e
pksi4e

Yesterday at 12:27 AM

Solved Level 1 challenge Caesar Encryption

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

OUR 7 MOST SOLVED CHALLENGES:
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