The game, along with a few others, was only available publicly on EchoStar Dishplayer 500, 7100, and 7200 models, and consisted of the shareware version of the game as a demonstration of the unit's technological capabilities. Users would access the games from the TV Home interface on their units.
Though not initially widely known, Doom was also available on the WebTV Plus unit. Hackers discovered the game on a secret WebTV server known as TestDrive in late 1998. They were able to download the game from a WebTV internal page and also extract the download and startup commands which were then released to the public on Sunday, March 28, 1999, by user MattMan69. Users would then have to initially download the game to the unit by accessing the WebTV-specific URI wtv-disk:/content/DownloadScreen.tmpl?diskmap=Doom. After that, it could be launched any number of times using the URI Client:boota?partition=DoomROM&size=5242880&source=file://disk/Doom/approm.o