Master of Orion 3 -- I gather its not as good as the second one
Yeah, that's a big understatement.
That said, I liked it, and I recommend getting it as cheap as you can, and then patching it, and then install the Vanilla mod, Google it, and you have a game that's fully functional.
Instead of barely plays correctly, with an AI that doesn't do anything, at all. Or if they do anything, it's rare as hell.