Last updated: March 2026
Terms of Use
By using Sudoku Online you agree to these terms. If you disagree, please stop using the site.
Using the service
The game and help content are provided for personal, non-commercial entertainment unless we grant written permission otherwise. Do not attempt to disrupt servers, scrape the service in ways that overload infrastructure, or reverse engineer to cheat the leaderboard.
Accounts
You are responsible for your login credentials. Do not impersonate others or choose offensive usernames. We may suspend accounts that abuse the service or other players.
Premium downloads
PDF puzzle packs you purchase are licensed for your personal use. Redistribution, resale, or posting complete packs publicly is not allowed unless explicitly permitted in writing.
Disclaimer
The site is provided as is. We strive for reliability but do not guarantee uninterrupted access or error-free puzzles. To the extent allowed by law, we are not liable for indirect or consequential damages arising from use of the site.
Third parties
Ads, payment processors, and authentication providers have their own terms. Your use of those features is also subject to their policies.
Governing law
Where required, disputes may be governed by the laws applicable to the operator's jurisdiction. If any clause is invalid, the remainder stays in effect.
Thank you for playing fairly and respecting other users. See the Privacy Policy for how data is handled.