The technical nomenclature of the archive provides immediate insight into its purpose:

: This indicates that the software is feature-complete but likely contains bugs. Developers release these versions to gather player feedback and technical logs before a polished "Gold" release.

The Digital Threshold: Analyzing the Secret Summer Beta Release

: This confirms the platform (Windows/Linux) and the packaging method. Zipping the files is a standard way to preserve the directory structure of engines like Ren'Py or Unity, which are frequently used for such projects.