Before God of War, one game successfully managed to integrate Greek mythology into video games.  Broderbund software, better known for the original Prince of Persia and the Carmen Sandiego games, crafted this tale of Orpheus, a Greek lad who adventures to Hades in order to save his love Helena.  You’ll recieve items from the gods and encounter enemies such as the Cyclpos, Medusa, and others which have been ripped from your Greek mythology textbook.  The gameplay is inspired by Zelda 2, so fans of that game should definently track this game down.