Doom II: Hell on Earth, is a first-person shooter game by id Software. It was released for MS-DOS computers in 1994 and Macintosh computers in 1995. Unlike the original Doom, which was initially only available through shareware and mail order, Doom II was sold in stores.
(The reason for having a non-embedded version is just in case you cant type in specific text boxes in games or if there are glitches.)