For those interested in game development or the history of computer games, the source code for Zork I, Zork II, and Zork III were just open sourced on GitHub under the MIT license.
From Microsoft:
Today, we’re preserving a cornerstone of gaming history that is near and dear to our hearts. Together, Microsoft’s Open Source Programs Office (OSPO), Team Xbox, and Activision are making Zork I, Zork II, and Zork III available under the MIT License. Our goal is simple: to place historically important code in the hands of students, teachers, and developers so they can study it, learn from it, and, perhaps most importantly, play it.
Each repository includes:
Accompanying documentation where available, such as build notes, comments, and historically relevant files.
Clear licensing and attribution, via MIT LICENSE.txt and repository-level metadata.
This release focuses purely on the code itself. It does not include commercial packaging or marketing materials, and it does not grant rights to any trademarks or brands, which remain with their respective owners. All assets outside the scope of these titles’ source code are intentionally excluded to preserve historical accuracy.
