What is a .YYZ file?
A .YYZ file is a type of file used by GameMaker, a program made by YoYo Games for creating video games. This file is actually a compressed (zipped) folder that includes everything needed to load and work on a game project. Inside a .YYZ file, you will find the main project file, which has a .YYP extension, as well as all the different parts of the game like objects and various assets (like images and sounds).
The reason why someone might save a project as a .YYZ file is to make it easier to move the whole project from one computer to another, to keep a backup, or to share it with other people. This is because all the parts of the project are bundled into one single file.
To open a .YYZ file, you can use GameMaker, the same software that created it. Since the .YYZ file is a zipped file, you can also open it with any program that can handle zip files, like WinRAR, WinZip, or the built-in decompression utility in your computer's operating system. This allows you to see all the contents inside the .YYZ file without needing GameMaker, but to actually work on the project, you would need to use GameMaker.
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