Retro Gaming and Motorsports enthusiast
That video is a hoax. It’s a small screen inserted into a pregnancy test, cables run out the side which is never brought into frame.
It seems since I have made this post that a huge amount of progress has been made in getting FPS games running on the neogeo.
I hope someone accomplishes it, even if it’s single digit framerate.
But not on a Neo Geo!
https://www.youtube.com/watch?v=4f1-7c6WX10
TL;DW - the Neo Geo has a uniquely bad architecture for FPS games making them nearly impossible to get working on the console.
Billionaire trick