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The Crypto Challenge Contest

372
Challenges
13,821
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
cs511329
cs511329

Solved Level 2 challenge Letter to the Templars — Part 3

cs511329
cs511329

Solved Level 1 challenge Letter to the Templars — Part 2

cs511329
cs511329

Solved Level 1 challenge Letter to the Templars — Part 1

cs511329
cs511329

Solved Level 1 challenge Hill Cipher with Sudoku Key

cs511329
cs511329

Solved Level 1 challenge Beaver Code

cs511329
cs511329

Solved Level 1 challenge Trifid Cipher

cs511329
cs511329

Solved Level 1 challenge Caesar Encryption

cs511329
cs511329

Solved Level 1 challenge Number Sequence — Part 2

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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