Terms of Service

Last updated: 21 September 2026

Welcome to Murdoku Online. Murdoku is a free logic deduction game inspired by the original Murdoku idea by Manuel Garand and the fan version by Dirk Aporius. By opening and playing Murdoku at murdokuonline.org you agree to these Terms of Service. If you do not agree with them, please do not use the site.

The game is free

Murdoku is provided free of charge. There is no account to create, no sign-up, no subscription, and no purchase required or offered. Every case, every theme, the tutorial, the editor, the generator and the printable sheets are available to everyone at no cost. The site is funded by advertising, which is described in our privacy policy.

Acceptable use

You may play Murdoku, create your own cases in the editor, generate cases, and export or import your creations for personal, non-commercial enjoyment. You agree not to misuse the site — for example, do not attempt to disrupt, overload or interfere with the service or with other players, do not scrape it automatically at a rate that degrades it for others, do not attempt to interfere with the advertising it carries, and do not use Murdoku for any unlawful purpose.

Your creations

Cases you build in the editor are yours. They are stored on your own device and, if you choose to export them, in the files you save. You are responsible for the content of anything you create and share. Do not build or share a case whose text is unlawful, harassing or otherwise abusive.

Intellectual property

The Murdoku name and the original concept belong to their respective creators. This fan version is offered for the enjoyment of the puzzle community and is not an official product. The case texts, artwork and code of this site are ours unless stated otherwise. All trademarks referenced remain the property of their owners. If you believe something here infringes your rights, write to support@murdokuonline.org and we will look into it promptly.

Advertising

Pages on this site carry advertising from third-party networks. Advertisements are labelled and kept out of the board, the clue column and the navigation, so they never interfere with solving a case. We do not endorse the products advertised and we are not responsible for the content of third-party ads or for the sites they lead to.

No warranty

Murdoku is provided “as is” and “as available”, without warranties of any kind, whether express or implied. While every case is machine-checked to have a single solution reachable by forward logic, we do not promise that the site will be uninterrupted, error-free, or available at all times.

Limitation of liability

To the fullest extent permitted by law, the makers of this site are not liable for any indirect, incidental, or consequential damages arising from your use of, or inability to use, Murdoku. Nothing in these terms limits liability that cannot be limited by law.

Changes to these terms

We may update these Terms of Service from time to time. When we do, we will revise the “last updated” date above. Continuing to play Murdoku after a change means you accept the revised terms.

Read next

  • Privacy policy — what this site stores, and the cookies its advertising uses.
  • About Murdoku Online — who runs the site and how the cases are built.
  • Contact Murdoku Online — how to reach us.
  • Play Murdoku online — free murder-mystery logic puzzles, no sign-up.