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The Crypto Challenge Contest

370
Challenges
13,254
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
ohbatcat
ohbatcat

Solved Level 1 challenge Find the right route — Part 1

Kate
Kate

Solved Level 1 challenge Caesar Encryption

Kate
Kate

Solved Level 1 challenge Number Sequence — Part 2

Kate
Kate

Solved Level 1 challenge Original Caesar Cipher

Simonselles
Simonselles

Solved Level 1 challenge Number Sequence

Kate
Kate

Solved Level 1 challenge Number Sequence

Javantea
Javantea

Solved Level 3 challenge The Heavy T52 Sturgeon Challenge — Part 7

Hermela
Hermela

Solved Level 2 challenge Partial Key Exposure with RSA — 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
OUR 7 MOST SOLVED CHALLENGES:
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