download

https://www.dropbox.com/s/ftfu5a23e78npvr/mslug.zip?dl=0

and

https://www.dropbox.com/s/kdd8dc1bj4kj4q2/neogeo.zip?dl=0

put both zip files in the same folder, do not extract

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download retroarch 1.8.4

forward port 55435 both TCP and UDP on your router to your pc

launch retroarch

load core Arcade (FB Alpha 2012 Neo Geo)

navigate retroarch menu Load Content

load mslug.zip