Any reason to play world conquest? Any difference at any point, anywhere?
I assume the link in the description is a fully JAST translation?
Is any removed scene in gold? If so, is it included in World Conquest?
World Conquest is the first game. It basically has more of a plot than Gold but has fewer girls, most of the events center around characters in Zipang and Arthur, and some of the mechanics are not that improved compared to Gold, such as after battle rewards and no shop/synthesizing. Gold, however, leaves the plot lacking in substance, so to speak, and it essentially functions like a fan-disc or sorts that basically caters to every girl in the game. Events are more equally distributed among all of the girls, but as stated above, most of these events tend to be relatively the same at most. If you really want to play something with some sort of plot, then World Conquest you should try first. If you're just here for the scenes and the girls, Gold is your best bet. At least, in my opinion