There is only one file type that uses the .WGI extension:
Wildgame Innovations Video File
A WGI file is a video recorded by Wildgame Innovations software, which is used to record wild game activity in different locations for hunting purposes. The video is a collection of time-lapse images known as "flex-time."
WGI files can be played using the software packaged with your Wildgame Innovations camera (Windows, Mac) or with VideoLAN VLC media player (cross-platform). You may also be able to play a WGI file in other media players by changing the file's extension to .avi.
Updated: October 29, 2020