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The Crypto Challenge Contest

373
Challenges
13,954
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
Katatsumuri-maru
Katatsumuri-maru

Solved Level 1 challenge Number Sequence — Part 5

Katatsumuri-maru
Katatsumuri-maru

Solved Level 1 challenge Modular Sequences

Katatsumuri-maru
Katatsumuri-maru

Solved Level 1 challenge Number Sequence — Part 10

Katatsumuri-maru
Katatsumuri-maru

Solved Level 2 challenge Advent Challenge — Part 3

Katatsumuri-maru
Katatsumuri-maru

Solved Level 2 challenge Advent-Challenge — Part 2

Katatsumuri-maru
Katatsumuri-maru

Solved Level 1 challenge ADFGVX — Part 2

Micah Anderson
Micah Anderson

Solved Level 1 challenge Grille Cipher

Katatsumuri-maru
Katatsumuri-maru

Solved Level 1 challenge ADFGVX — 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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