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The Crypto Challenge Contest

372
Challenges
13,581
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
Alexander Kulpe
Alexander Kulpe

Solved Level 1 challenge A hidden word

Alexander Kulpe
Alexander Kulpe

Solved Level 1 challenge Number Sequence — Part 4

Alexander Kulpe
Alexander Kulpe

Solved Level 1 challenge Number Sequence — Part 3

song_yu
song_yu

Solved Level 2 challenge Cracking SHA1-Hashed Passwords

E42214087wangzitong
E42214087wangzitong

Solved Level 2 challenge Cracking SHA1-Hashed Passwords

E42214063
E42214063

Solved Level 2 challenge Cracking SHA1-Hashed Passwords

Frilyn
Frilyn

Solved Level 2 challenge Cracking SHA1-Hashed Passwords

Terence
Terence

Solved Level 2 challenge Kaskade-S/T — Part 3

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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