I think that these are basically physical versions of the recent unity ports of the classic Doom games. In which case, the answers to your questions would be: Ultimate Doom These unity ports of Ultimate Doom & Doom 2 have a in-game add-on system that allows you to download and play various additional WADs. This includes TNT: Evilution, Plutionia, The Master Levels, No Rest For the Living, plus several community created WADs. BFG Edition, so the base game + Resurrection of Evil + The Lost Levels. I hope that helps.