Is this the game where one side plays an invading wizard that has hordes of vampires under his control, while the other side plays a group of allied kingdoms... And the players use diplomacy and war to convert the different kingdoms to their side, ultimately trying to take over the world (a continent that appears to lost a series of fights to a gang of meteors)...
I think I have that game packed away somewhere -- it's been a long while since I played it last... but if it IS the game in question, I have the rules.