Pam Holaway

I happened to get the Midway arcade as a gift. Yes, very retro and fun to play the old school games! The kids love to play it because it's nothing like the games of today! My question? It came with a cartridge. I was wondering if there are more cartridges that can be purchased and played on this same machine. I have gone out and looked a little, but I haven't seen any cartridges that are made just for it. Any ideas?!

Thanks!