The page Great Underground Empire is a page that has only 13 games associated with it, 11 are Zork games. One is an Avernum game, a RPG taking place in a cave under the earth. And one I have no clue.
This page was specifically made for Zork, But if we renamed it to "Underground Empire" and changed the discription from The subterranean setting of the Zork games. to something else, more general. Then this page could be repurposed.
Baring that, then I think it should be Deleted.