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The Crypto Challenge Contest

368
Challenges
13,012
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
kis8p
kis8p

Today at 02:54 PM

Solved Level 1 challenge Number Sequence

jiuman
jiuman

Today at 07:44 AM

Solved Level 2 challenge Alice's Birthday Party (Part 1)

Alain Collignon
Alain Collignon

Yesterday at 08:42 AM

Solved Level 2 challenge PX-1000 Encryption – Part 1

grazt
grazt

Earlier

Solved Level 1 challenge Original Caesar Cipher

grazt
grazt

Earlier

Solved Level 1 challenge Number Sequence — Part 2

grazt
grazt

Earlier

Solved Level 1 challenge Number Sequence

aki54
aki54

Earlier

Solved Level 1 challenge Number Sequence

Ahrexdy
Ahrexdy

Earlier

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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