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The Crypto Challenge Contest

373
Challenges
13,927
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
Plinio William
Plinio William

Solved Level 1 challenge A hidden word

Plinio William
Plinio William

Solved Level 1 challenge Letter to the Templars — Part 1

Plinio William
Plinio William

Solved Level 1 challenge Number Sequence — Part 3

Plinio William
Plinio William

Solved Level 1 challenge Caesar Encryption

Plinio William
Plinio William

Solved Level 1 challenge Beaver Code

Plinio William
Plinio William

Solved Level 1 challenge Number Sequence — Part 2

Anand Prakash
Anand Prakash

Solved Level 1 challenge Number Sequence

Plinio William
Plinio William

Solved Level 1 challenge Original 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

Start exploring the challenges
OUR 7 MOST SOLVED CHALLENGES:
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