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The Crypto Challenge Contest

367
Challenges
12,988
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
Chris
Chris

Today at 04:25 PM

Solved Level 1 challenge Beaver Code

Chris
Chris

Today at 04:01 PM

Solved Level 1 challenge Caesar Encryption

Chris
Chris

Today at 03:51 PM

Solved Level 1 challenge Number Sequence — Part 2

Chris
Chris

Today at 03:49 PM

Solved Level 1 challenge Original Caesar Cipher

Chris
Chris

Today at 03:47 PM

Solved Level 1 challenge Number Sequence

csk
csk

Earlier

Solved Level 1 challenge Modified Caesar Cipher

xaav
xaav

Earlier

Solved Level 1 challenge Number Sequence — Part 6

xaav
xaav

Earlier

Solved Level 1 challenge A hidden word — 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

OUR 7 MOST SOLVED CHALLENGES:
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