Fireball is a HARD game to track down. I've spent a few years looking for one, and I was rewarded with a HUO example which is on its way. Probably the best multi player EM ever made. My favorite is still Spirit of 76 for sentimental reasons.

If you are looking to buy an EM or SS, check my current inventory, and keep you eye out for an announcement on another container load of SS and EMs