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The Crypto Challenge Contest

371
Challenges
13,330
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
Stephen Thompson
Stephen Thompson

Solved Level 1 challenge Number Sequence — Part 10

Ronen Kalderon
Ronen Kalderon

Solved Level 1 challenge Beaver Code

Aaron
Aaron

Solved Level 1 challenge Number Sequence

Aaron
Aaron

Solved Level 1 challenge Number Sequence — Part 2

Aaron
Aaron

Solved Level 1 challenge Beaver Code

SGriem
SGriem

Solved Level 1 challenge Original Caesar Cipher

Mr. Benito
Mr. Benito

Solved Level 1 challenge Original Caesar Cipher

Ronja Schwarz
Ronja Schwarz

Solved Level 2 challenge Cracking SHA1-Hashed Passwords

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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