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The Crypto Challenge Contest

371
Challenges
13,323
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
Ronen Kalderon
Ronen Kalderon

Solved Level 1 challenge A hidden word

Konstantinos Ntouros
Konstantinos Ntouros

Solved Level 1 challenge Caesar Encryption

Konstantinos Ntouros
Konstantinos Ntouros

Solved Level 1 challenge Original Caesar Cipher

Clandestino
Clandestino

Solved Level 1 challenge A hidden word

nek
nek

Solved Level 1 challenge Original Caesar Cipher

Michael
Michael

Solved Level 3 challenge CMEA 2

Panagiota Athina
Panagiota Athina

Solved Level 1 challenge Original Caesar Cipher

Blueblaze
Blueblaze

Solved Level 1 challenge Number Sequence — Part 2

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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