allow for more advanced graphics capabilities, were made known as early as late 1998 and 1999 respectively. While it only got an official release for DishPlayer units in 1999 alongside a port of the Netshow version of You Don't Know Jack and Solitaire, all made to demo the technological capabilities of the WebTV hardware, a port made for original WebTV Plus units that wasn't publicly released was discovered by its dedicated hacking scene around August 1998, which could only be downloaded from connecting to an internal WebTV service. The WebTV and DishPlayer ports were likely developed by Prolific Publishing, Inc. Ports for both devices were stripped-down versions of the full game, only containing 4 episodes, most likely due to the fact they were made solely as demos. The ports also made use of the WebTV keyboard for control input. Because there was no concern to know how the boxes stored information on the hard disks when either port was made known, and in the case of the WebTV Plus port, copies were supposedly subject to being wiped from the hard disks on command from the WebTV service, both the WebTV Plus and DishPlayer ports remained unpreserved for some time. Since then though, there have been a couple attempts to preserve the game and allow it to be playable after the service's discontinuation. Recently, unmodified versions of WebTV Plus and DishPlayer Doom, alongside other WebTV games, have since been publicly archived online. From 2014 to 2021, though, both the DishPlayer and WebTV Plus versions of the game were only available to play through a custom WebTV firmware image named "HackTV", which was done by WebTV hackers MattMan69 and eMac. These efforts did not intend to preserve the ports in their original forms, however, as the WebTV Plus version in particular is known to have modifications to carry the "HackTV" branding on the splash screen. In Doom Eternal In Doom Eternal, the original Doom and Doom II games are available to play in the Doom Slayer's PC in the Fortress of Doom. Both need to be unlocked, the first by collecting all of the in-game cheat codes, and the second one via the password FLYNNTAGGART. Source ports This is a list of unofficial ports of the engine used to run Doom, referred to as source ports, that expand upon the engine's capabilities, alter how the game being run is played, or make