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The Crypto Challenge Contest

369
Challenges
13,157
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
Leonardo
Leonardo

Yesterday at 08:02 PM

Solved Level 1 challenge Original Caesar Cipher

Javantea
Javantea

Yesterday at 06:12 PM

Solved Level 2 challenge The T52 Sturgeon Challenge — Part 1

Doc Cool
Doc Cool

Yesterday at 05:37 PM

Solved Level 1 challenge Caesar Encryption

Doc Cool
Doc Cool

Yesterday at 05:04 PM

Solved Level 1 challenge Number Sequence — Part 4

Doc Cool
Doc Cool

Yesterday at 04:38 PM

Solved Level 1 challenge Number Sequence — Part 3

Doc Cool
Doc Cool

Yesterday at 04:29 PM

Solved Level 1 challenge Number Sequence

Doc Cool
Doc Cool

Yesterday at 04:16 PM

Solved Level 1 challenge Number Sequence — Part 2

Doc Cool
Doc Cool

Yesterday at 04:08 PM

Solved Level 1 challenge Original Caesar Cipher

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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