An extra episode!? You can buy Final Doom for The PC, Macintosh, or Playstation 1. It’s 2 new episodes of Doom 2. The extra episodes are TNT and Plutonia. Somebody said that there’s an Egyptian secret level. I don’t know much else about Final Doom other than you can get it in Doom Collector’s Edition or here:
There’s also 20 regular levels and 1 secret level in Master Levels for Doom 2. I bought it in 1996 or 97 and it came with a poster inside. So technically, I guess that you can call it a lost episode. It’s not freeware. It comes with a level launcher. It came with Maximum Doom, which is something like 1,000 levels for Doom and Doom 2: http://store.steampowered.com/app/9160/
While I'm talking about extra Doom 2 episodes, if you download Skulltag, it comes with 2 new episodes for Doom 2. The Skulltag download is temporarily unavailable because it’s moving from skulltag.com to skulltag.net. Risen3D comes with extra levels for Doom and Doom 2 that take advantage of coding and extra features. You should be able to get Risen3D here at http://risen3d.drdteam.org/ , but why on Earth are the download web sites for both Skulltag and Risen3D down?
If you find any new Wolfenstein 3D secret levels in Doom or Doom 2, then tell me and I’ll add them to the list at http://www.wolfensteingoodies.com/doommodsandclones/w3dindoom2/w3dindoom2.htm .
Xbox Doom and Doom 2 in Doom 3 Spoiler Alerts!