The original Doom games by id Software are Doom (with its shareware version, Doom: Knee-Deep in the Dead) and its continuation Doom II: Hell on Earth. Additionally, Doom itself was expanded by part of the id Software team and released as The Ultimate Doom, and a couple of megawads by fan community members were published in full IWAD format by id Software as Final Doom, as a semi-official[1] continuation of the games.