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The Crypto Challenge Contest

373
Challenges
13,962
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
Makrand
Makrand

Solved Level 1 challenge Original Caesar Cipher

Sreenitha Chowdary
Sreenitha Chowdary

Solved Level 1 challenge Caesar Encryption

Zidnerpa
Zidnerpa

Solved Level 1 challenge Number Sequence — Part 5

C Vamshidhar Reddy
C Vamshidhar Reddy

Solved Level 1 challenge Original Caesar Cipher

benito255
benito255

Solved Level 1 challenge Grille Cipher

benito255
benito255

Solved Level 1 challenge Factorization Cipher — Part 1

benito255
benito255

Solved Level 1 challenge Monoalphabetic Substitution

benito255
benito255

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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