I love this series; I bought the Collector's Edition on eBay which includes The Age of Empires, Rise of Rome Expansion, Age of Empires II, the Conqueror's Expansion, and a music soundtrack. Four CD's altogether in a double jewel case. Also had some trading cards and a big manual. This is one of the few games that I've played for years and not gotten the least bit tired of. I just wish they had made an Age of Empires III instead of that mythology stuff.