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The Crypto Challenge Contest

368
Challenges
13,027
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 06:22 PM

Solved Level 1 challenge Reserve Hand Procedure — Part 1

Jin
Jin

Yesterday at 08:53 PM

Solved Level 2 challenge The Syllabary Cipher – Part 2

Silvia Kortmann
Silvia Kortmann

Yesterday at 04:08 PM

Solved Level 2 challenge PX-1000 Encryption – Part 1

Jin
Jin

Yesterday at 01:57 PM

aeazea
aeazea

Yesterday at 09:45 AM

Solved Level 1 challenge Number Sequence

jiuman
jiuman

Earlier

pksi4e
pksi4e

Earlier

Solved Level 1 challenge Original Caesar Cipher

pksi4e
pksi4e

Earlier

Solved Level 1 challenge Modified Caesar Cipher

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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