MysteryTwister - The Cipher Challenge Contest

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The Cipher Challenge Contest

378
Challenges

14,793
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 inducted into the Hall of Fame.

Challenges in four levels

Four degrees of difficulty, from pen & paper to complex mathematical problems

Ron Stoner

Solved Level 3 challenge RSA with Special d

luigylemon

Solved Level 1 challenge Original Caesar Cipher

luigylemon

Solved Level 1 challenge A modified homophonic cipher with reduced alphabets — Part 2

luigylemon

Solved Level 1 challenge A disguised code

luigylemon

Solved Level 1 challenge Caesar Encryption

Ron Stoner

Solved Level 2 challenge The T52 Sturgeon Challenge — Part 7

luigylemon

Solved Level 1 challenge ¿No Hablas Español? No problemo!

Ron Stoner

Solved Level 3 challenge The Heavy T52 Sturgeon Challenge — Part 4

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

Number Sequence
Level 1

Original Caesar Cipher
Level 1

Number Sequence — Part 2
Level 1

Caesar Encryption
Level 1

Beaver Code
Level 1

Number Sequence — Part 3
Level 1

Letter to the Templars — Part 1
Level 1