pkg2app是一个用AppleScript编写的小程序，用于帮助安装GOG中的游戏，这些游戏的安装程序在游戏安装过程中会出现错误。
大多数来自GOG应用商店的Mac游戏都是以包的形式分发的，更确切地说，是.pkg文件。它们非常方便，你只需要双击文件，安装过程就会开始，但也会出现安装不成功的情况，而且这种情况往往发生在相当重的游戏上。这种情况也发生在官方的.pkg文件上，而且问题往往不是由于你的行为造成的。
你可以尝试使用标准的pkgutil工具或使用专门用于从.pkg中提取文件的特殊程序从.pkg安装程序中提取游戏文件，但该工具的开发者已经为你做了一切。
该工具非常容易使用。第一次启动时，会出现一个小窗口，里面有几个选项，可以选择如何/从哪里提取.pkg安装程序中的文件（这也可以在应用程序设置中改变）。选择该设置后–只需将带有问题游戏或dlc的.pkg文件拖到pkg2app应用程序图标上，就会开始从安装程序中提取文件。
pkg2app is a small application written in AppleScript to help install games from GOG whose installers give an error during game installation.
Most Mac games from the GOG app store are distributed as packages, more specifically .pkg files. They are very convenient, you just need to double-click on the file and the installation process will begin, but it happens that it ends unsuccessfully and most often this happens with rather heavy games. This also happens with official .pkg files, and the problem is most often not due to your actions.
You can try to extract the game files from the .pkg installer yourself using the standard pkgutil utility or using special programs designed to extract files from .pkg, but the utility developer has already done everything for you.
The utility is very easy to use. On first launch, a small window will appear with several options on how/where files from .pkg installers will be extracted (this can also be changed in the application settings). After choosing this setting - just drag the .pkg file with the problematic game or dlc onto the pkg2app application icon and the extraction of files from the installer will begin.
What’s new
Changes:
Can now handle all installers at once without having to be concerned about installing order.
Complete graphic user interface, with multiple file selections, preferences, loadings, notifications and a HD icon.
Default extracting behavior can now be changed to “Always ask where to extract”, “Always extract next to the installers” or “Always extract in a specific folder…”. You’ll be asked the first time you run the application, you can double-kick the .app to change it later.
It now only accept installers from GOG to prevent mistakes and misuses
Many under the hood changes to integrate all these features
Globally safer, cleaner and more performant