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The Crypto Challenge Contest

368
Challenges
13,067
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
Richard
Richard

Earlier

Solved Level 1 challenge Number Sequence

Alexandros
Alexandros

Earlier

Solved Level 1 challenge Advent-Challenge — Part 1

Polaris
Polaris

Earlier

Solved Level 2 challenge The Josse Challenge – Part 2

Polaris
Polaris

Earlier

Solved Level 2 challenge The Josse Challenge – Part 1

Alexandros
Alexandros

Earlier

Solved Level 1 challenge Nils away on travel

starting
starting

Earlier

Solved Level 1 challenge Number Sequence — Part 2

starting
starting

Earlier

Solved Level 1 challenge Original Caesar Cipher

starting
starting

Earlier

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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