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The Crypto Challenge Contest

367
Challenges
12,986
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
csk
csk

Yesterday at 09:03 AM

Solved Level 1 challenge Modified Caesar Cipher

xaav
xaav

Yesterday at 08:54 AM

Solved Level 1 challenge Number Sequence — Part 6

xaav
xaav

Yesterday at 08:50 AM

Solved Level 1 challenge A hidden word — Part 2

xaav
xaav

Yesterday at 06:47 AM

Solved Level 1 challenge A disguised code

Luigi Tomelli
Luigi Tomelli

Earlier

Solved Level 2 challenge Alberti Challenge — Part 2

Jin
Jin

Earlier

Solved Level 2 challenge Advent Challenge — Part 3

Jin
Jin

Earlier

Solved Level 2 challenge Keyshanc — Part 2

Jin
Jin

Earlier

Solved Level 2 challenge Keyshanc — Part 1

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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