Problem is you're asking a company to devote resources and time to making a 20 year old game ready to be distributed, and playable, on modern computers. Also, there is an extremely small playerbase. Not to mention the hurdles and obstacles to modifying the game to enjoy it. Hacking the game, modifying the game, adding roundabout overlayed code to the game - all of it, would pale in comparison to a real open source redo with modern technologies, tools, and architecture. Prof Garfield is right. Redo the game. (And the first guy who says "FreeCiv is available" gets a punch to the face).