: Version numbers like "0.999e" often signify a game that is nearly at its 1.0 full release. Small indie developers on platforms like itch.io often distribute Mac builds as simple ZIP files.
: It may be a specific "Nightly" or experimental build of an open-source project like Dungeon Crawl Stone Soup (DCSS) or Brogue . How to Install and Run Rogue-Like-0.999e-mac.zip
: Double-click the .zip file in Finder to extract the application. : Version numbers like "0