I didn't find any ads for the gremlins games in my classic game collection, but if you don't already know, go to www.atariage.com and look at the sections for the Atari 2600 and Atari 5200 for the Gremlins games for those two systems. They are quite different, and they have pictures of the cartridges, box, and manuals, as well as screenshots and the ROMs. (or at least they used to when I last looked a long time ago). I don't know if you can use any of that stuff, but I thought I'd point it out.