Effective upon purchase. Last updated: April 2026.
Please read this before purchasing. By completing a purchase you confirm that you have read and agreed to these terms. Unfamiliarity with them after purchase is not a defense against their application. If you have questions before buying, reach out first.
Chisel is developed primarily to serve my own games and the teams I work with directly. It is not a community-driven project. I do not maintain a public roadmap, a feature request process, or any commitment to a release schedule. Updates happen when my own work demands them.
Though, feel free to reach out and report bugs or suggest improvements!
That means you are purchasing capable, actively used software that I depend on myself, not a support contract or a place in a community ecosystem. If you need a community-maintained engine with third-party contribution, this might not be right for you.
A one-time payment grants you a perpetual license to use and modify Chisel for all releases within that major version. Purchasing version 1, for example, covers every 1.x release. Future major versions are sold separately. Your access to a version you have purchased does not expire, even if that version is no longer actively developed.
A single purchase covers one individual or one team of up to twenty people working on shared projects. If your organization is larger than that, please reach out before purchasing so we can agree on appropriate terms. Compliance with this limit is based on good faith, so I implore you to just be honest.
"Source code" as used in this agreement refers to the human-readable code files, shaders, scripts, and associated assets that comprise Chisel Engine, in any form; whether as originally distributed, modified, or reconstructed from compiled output.
Your purchase includes access to the full source code. You are free to use Chisel, including its source code, in any personal or commercial project. You are free to modify it however you need, and to share it with the members of your licensed team.
You may not publicly publish the source code, or any portion of it that constitutes a functional, self-contained component -- meaning code that could be extracted and used in another project without significant additional work. This applies regardless of how large or small that portion is relative to the whole, and includes public repositories on GitHub, GitLab, or any similar platform. You may not redistribute Chisel as a standalone product, paid or free, and you may not sublicense it to other teams or individuals. Shipping a game or application built with Chisel is explicitly allowed. Sharing the engine itself is not.
Educational sharing is explicitly permitted. Showing code in a video, article, blog post, or forum reply for the purpose of explaining a concept or technique is fine, provided it does not amount to distributing a working, reusable component of the engine. Teaching how something works is allowed, providing a ready-to-use implementation someone could drop into their own project is not.
The one exception is a fork that has diverged so significantly it is no longer recognizably Chisel. If you believe your modifications fall into that category and you want to release them publicly, reach out first. This is assessed case by case and requires explicit written permission before you publish anything.
Attribution is not required. If you want to credit Chisel in your game's credits or keep the existing splash screen, it is greatly appreciated, but not required.
Violating these terms terminates your license immediately. I reserve the right to revoke your download access if I determine a breach has occurred.
All sales are final. Because Chisel is a digital product that includes full source code access delivered immediately upon purchase, there is no way to verify that a refund would not leave you continuing to benefit from the software. If you have doubts about whether Chisel is right for your project, please ask before buying.
For EU customers: by completing your purchase you acknowledge that delivery of the digital product begins immediately and you agree to waive your right of withdrawal under applicable EU consumer law.
I intend to keep downloads available for all purchased versions indefinitely, even after active development ends. That said, I reserve the right to discontinue new license sales at any time, and in rare circumstances, to end download availability entirely. If that ever happens, I will attempt to notify existing license holders via the email address associated with their purchase, though I cannot guarantee delivery. Your license is to the software itself. If downloads ever become unavailable through this site, you are responsible for maintaining your own copy.
I will make reasonable efforts to respond to bug reports and questions, but I am under no obligation to provide technical support or fixes on any particular schedule.
THE SOFTWARE IS PROVIDED "AS IS," WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. I MAKE NO WARRANTIES REGARDING FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR NON-INFRINGEMENT. YOUR USE OF THE SOFTWARE IS ENTIRELY AT YOUR OWN RISK.
TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW, I SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES ARISING OUT OF OR IN CONNECTION WITH YOUR USE OF THE SOFTWARE. IN NO EVENT SHALL MY TOTAL LIABILITY TO YOU EXCEED THE AMOUNT YOU PAID FOR THE SOFTWARE.
These terms are governed by the laws of the State of Utah, United States. Any disputes arising from them are subject to the exclusive jurisdiction of the courts of Utah.
I reserve the right to update these terms for future purchases. The terms in effect at the time of your purchase govern your license and do not change retroactively. The only exception is a change that closes an unintended loophole -- meaning a gap between the written terms and their clear intent. In that case, the change applies only to the specific gap being addressed, and notice will be sent to the email address associated with your purchase.