The "a" signifies this is an early alpha or development version, meaning it is likely unfinished, may contain bugs, and is under active development.
Always scan downloaded .zip files from independent sources with reputable antivirus software before extracting and running them to ensure safety. SexNote-0.19.0a-pc.zip
If you can share where you found this file, I might be able to find: The Patch notes or system requirements Content warnings or story synopses The "a" signifies this is an early alpha
Often features branching paths, character relationships, and custom CG (Computer Graphics) art. Safe Practices: meaning it is likely unfinished