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The Crypto Challenge Contest

372
Challenges
13,645
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
Patrick Foster
Patrick Foster

Solved Level 1 challenge New Year's Greetings — Part 1

kcou
kcou

Solved Level 1 challenge The Syllabary Cipher – Part 1

Martin Pescador
Martin Pescador

Solved Level 2 challenge Weakened Handycipher — Part 3

Patrick Foster
Patrick Foster

Solved Level 2 challenge M-138 — Part 3

hypercamel
hypercamel

Solved Level 1 challenge Letter to the Templars — Part 2

hypercamel
hypercamel

Solved Level 1 challenge Letter to the Templars — Part 1

Patrick Foster
Patrick Foster

Solved Level 2 challenge M-138 — Part 2

Piyush Agarwal
Piyush Agarwal

Solved Level 1 challenge Enigma Messages with Repeated Letters — 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

Start exploring the challenges
OUR 7 MOST SOLVED CHALLENGES:
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