: A "ball server" pack or individual ball skins used for modding sports games like PES 2021.
The file is likely associated with the popular "Roll-a-Ball" 3D beginner tutorial project from Unity Learn , or a similar game development asset package. Likely Contents File: What.A.Ball.zip ...
: Folders like Library or ProjectSettings (if it's a full project archive) or .meta files for asset tracking. Other Possibilities : A "ball server" pack or individual ball