Anyone know if this exact copy has two disk, one for base game and one for expansion?

[UncleIroh9001]

Black And White: Creature Isle - PC | eBay

Overall Condition: Good. © Retro Gaming of Denver. The Tale of Despereaux - PlayStation 2 - (NEW). Mass Effect 3 - PlayStation 3. Impossible Mission II [SEI] NES - (NEW). Mary Skelter Finale - PlayStation 4 - (NEW).

www.ebay.com

So I have the base game already installed on my pc from a base game disc. If this happens to be a one disk version, could I install the expansion from this disk over my already installed base game files?

 

[Nym]

I have never seen the game+expansion come on a single disc but on the chance it does, I can only assume it handles the game/expansion installers as separate options. You'd think the seller could be arsed to offer something in the listing description but I suppose not. I'd recommend asking the seller about the contents of the package since it is listed as used. Better safe than sorry.

That said, an install of -JUST- CI should not affect your base game install. CI would install itself into its own folder in the base game install location.