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The Crypto Challenge Contest

372
Challenges
13,699
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
Piyush Agarwal
Piyush Agarwal

Solved Level 2 challenge Molehunt (Part 3/3)

Piyush Agarwal
Piyush Agarwal

Solved Level 1 challenge Molehunt (Part 2/3)

electric ice wolf
electric ice wolf

Solved Level 1 challenge A modified homophonic cipher with reduced alphabets — Part 1

Piyush Agarwal
Piyush Agarwal

Solved Level 1 challenge Molehunt (Part 1/3)

electric ice wolf
electric ice wolf

Solved Level 1 challenge Number Sequence — Part 8

electric ice wolf
electric ice wolf

Solved Level 1 challenge Grille Cipher

electric ice wolf
electric ice wolf

Solved Level 1 challenge Factorization Cipher — Part 1

electric ice wolf
electric ice wolf

Solved Level 1 challenge Advent-Challenge — 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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