Microsoft has announced that the classic text adventure game Zork and its sequels are now available as open source software under the MIT License. This initiative follows Microsoft's acquisition of the Zork license through its purchase of Activision, which had previously acquired Infocom. The collaboration involves Microsoft, the Xbox Team, Activision, and digital archivist Jason Scott from the Internet Archive. Zork, Zork 2, and Zork 3 have been available on GitHub for several years, and Microsoft has officially submitted upstream pull requests to historical source repositories. The decision to make Zork open source highlights the game's celebrated writing and narrative depth.