Ladyinblue_v1.0-mac.zip -

Because this file likely comes from a third-party developer rather than the Mac App Store:

If you are unsure where this file originated, it is recommended to scan it with security software before opening, as .zip files can occasionally contain unsupported or unsigned software . Zip and unzip files and folders on Mac - Apple Support LadyInBlue_v1.0-mac.zip

Similar indie titles often use this exact naming structure on gaming sites. For example: uses DrenchedInBlue-1.0-mac.zip . Because this file likely comes from a third-party

: You may see a warning that the app is from an unidentified developer. To bypass this, Right-click (or Control-click) the app icon and select Open from the menu. LadyInBlue_v1.0-mac.zip