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The Cipher Challenge Contest

377
Challenges
14,652
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 inducted into the Hall of Fame.
Challenges in four levels

Four degrees of difficulty, from pen & paper to complex mathematical problems

Recent solves
Alain Collignon
Alain Collignon

Solved Level 1 challenge Assembly Point – Part 1

Emanuele
Emanuele

Solved Level 1 challenge Assembly Point – Part 1

jgamblin
jgamblin

Solved Level 1 challenge Assembly Point – Part 1

Jerva
Jerva

Solved Level 1 challenge Assembly Point – Part 1

madness
madness

Solved Level 1 challenge Assembly Point – Part 1

Dr. Peter Uelkes
Dr. Peter Uelkes

Solved Level 1 challenge Assembly Point – Part 1

ritinha
ritinha

Solved Level 1 challenge Original Caesar Cipher

ritinha
ritinha

Solved Level 1 challenge Number Sequence

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: