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The Crypto Challenge Contest

374
Challenges
14,192
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
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Solved Level 1 challenge A hidden word — Part 2

Bkys
Bkys

Solved Level 1 challenge Bigram Substitution – Part 1 (Tutorial)

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Solved Level 1 challenge Number Sequence — Part 3

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Solved Level 1 challenge A hidden word

Seth Kintigh
Seth Kintigh

Solved Level 1 challenge Bigram Substitution – Part 1 (Tutorial)

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tgz

Solved Level 1 challenge Beaver Code

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Solved Level 1 challenge Number Sequence — Part 2

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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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