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Sign Up
When you solve one of our free puzzles, you become eligible to become a KOTZU member and can access the features in our members' area:
- Complete access to the collection of puzzles
- Contest puzzles and tournaments to win prizes
- Tracking tools to view your performance
- A discussion board to share puzzle-solving tips
- Advertisement-free content (except for certain pages)
Membership is free, but you must be invited (an invitation is sent to those who correctly solve one of the free puzzles).
Create Your Account
To create a member account, provide your e-mail address and validation code below. To obtain a validation code, you must solve one of the free puzzles.
NOTE: Validation codes expire after thirty days.