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The Crypto Challenge Contest

370
Challenges
13,238
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
Max
Max

Solved Level 1 challenge Advent-Challenge — Part 1

johnblack
johnblack

Solved Level 1 challenge Number Sequence

Max
Max

Solved Level 1 challenge A hidden word

peanutty
peanutty

Solved Level 1 challenge Caesar Encryption

Javantea
Javantea

Solved Level 2 challenge The T52 Sturgeon Challenge — Part 9

peanutty
peanutty

Solved Level 1 challenge Number Sequence — Part 2

peanutty
peanutty

Solved Level 1 challenge Original Caesar Cipher

peanutty
peanutty

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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