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The Crypto Challenge Contest

372
Challenges
13,845
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
phobos
phobos

Solved Level 1 challenge Image Noise

Jebbex
Jebbex

Solved Level 1 challenge Number Sequence

Pinaki Saha
Pinaki Saha

Solved Level 1 challenge Number Sequence

Nichooo
Nichooo

Solved Level 1 challenge Original Caesar Cipher

Patrick Foster
Patrick Foster

Solved Level 2 challenge Wheatstone Cryptograph — Part 2

Froidastics
Froidastics

Solved Level 2 challenge Cracking SHA1-Hashed Passwords

Katatsumuri-maru
Katatsumuri-maru

Solved Level 1 challenge Find the right route — Part 1

Froidastics
Froidastics

Solved Level 1 challenge Number Sequence — Part 5

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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