I was watching one of John's videos and he mentioned you can swap about boards. He had mentioned the specific arcade game he was using was a certain type of board (i.e. a chipset?) -- I don't recall the name -- and then mentioned as long as it's that type that you can swap out any other board. I'm curious because my friend owns a Ghosts & Goblins arcade and I'd like to get some more boards to play if it's possible to do that sort of thing. I did a google search but didn't come up with much useful information on this topic (i.e. different types of boards). A quick search on eBay and I did see some boards for sale.