A go file extension is related to Go video games and used for store recorded games.
There is one other file type using
the GO file extension!
.go - Google Go programming language source code
GO file extension - Go game data
What is go file? How to open go files?
File type specification:
The go file extension is used by some Go video games for files that contain recorded games, or just individual moves.
Go video games seems to be obsolete product, without support from developers.
This go file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.