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The Crypto Challenge Contest

374
Challenges
14,183
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
Lap
Lap

Solved Level 1 challenge Number Sequence

Reuben
Reuben

Solved Level 1 challenge Number Sequence — Part 9

Reuben
Reuben

Solved Level 1 challenge Number Sequence — Part 6

Dr. SiPM
Dr. SiPM

Solved Level 1 challenge Caesar Encryption

Dr. SiPM
Dr. SiPM

Solved Level 1 challenge Number Sequence — Part 2

Dr. SiPM
Dr. SiPM

Solved Level 1 challenge Original Caesar Cipher

Dr. SiPM
Dr. SiPM

Solved Level 1 challenge Number Sequence

Jason
Jason

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:
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