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The Cipher Challenge Contest

381
Challenges
15,186
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

Recent solves
PanosKappos
PanosKappos

Solved Level 1 challenge Original Caesar Cipher

foteini
foteini

Solved Level 1 challenge Caesar Encryption

Emmanuil Orfanakis
Emmanuil Orfanakis

Solved Level 1 challenge Original Caesar Cipher

foteini
foteini

Solved Level 1 challenge Original Caesar Cipher

Nikiforos Giakoumakis
Nikiforos Giakoumakis

Solved Level 1 challenge Caesar Encryption

Nikiforos Giakoumakis
Nikiforos Giakoumakis

Solved Level 1 challenge Original Caesar Cipher

🤖
ez-way

Solved Level 2 challenge "The Road" — Part 3

Geo
Geo

Solved Level 1 challenge Caesar Encryption

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