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By accessing or using Lock and Keystone and its related pages, you agree to be bound by this agreement. Your use of the site indicates that you accept the terms spelled out in this document.
Lock and Keystone is a series of educational digital puzzle adventures designed for specific grade levels. In each adventure, small teams of students work through literacy and knowledge challenges to unlock codes before time runs out.
Lock and Keystone is intended as an engaging classroom enrichment experience, not as a formal assessment or replacement for direct instruction. While we do our best to create grade-appropriate adventures, we do not guarantee perfect alignment with every classroom or curriculum context.
Each purchase grants the purchaser one (1) license to use the purchased adventure in their own classrooms as often as needed. This license does not permit sharing purchased files, access PINs, or hosted experiences with other educators who have not purchased their own license.
Teachers and educators who choose to use Lock and Keystone in their classrooms are solely responsible for reviewing the content and deciding whether it is appropriate for their students.
Teachers are also responsible for monitoring their students while they interact with Lock and Keystone activities. We are not liable for classroom behavior, device misuse, or interactions between users during play.
Our informational pages strive to follow general web accessibility practices. The puzzle adventures themselves rely on artwork, timing, animation, and interaction patterns that may not align with every accessibility guideline.
You agree to use Lock and Keystone only for its intended educational and recreational purpose. You may not redistribute purchased files, access PINs, or hosted lesson experiences outside your licensed classroom use.
All materials on the site, as well as the organization and layout of the site, are owned and copyrighted by Ethan Dirks Inc. (DBA That Little Robot) and may only be accessed for your personal, non-commercial use. Without our prior written permission, you may not copy, distribute, or transfer any material on the site, in whole or in part.
This terms of service is effective as of 4/04/2026. Changes to this terms of service will be posted here. We will not be actively contacting you with updates, so please check back frequently for any changes. If you have any questions about this terms of service, contact us via our website.
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