The original Doom and Doom 2 were great shooters in their own right, but it was the support of external WADs (new levels created by fans and shared through pre-Internet BBSes and commercial CD collections) that made them enduring. Now Bethesda has taken the hassle out of navigating the DOS prompt and added support for "add-ons," a curated list of "the best community episodes and megapads," in addition to official Doom and Doom 2 content, accessible from the main menu of both games.

The first batch of add-on content includes "The Plutonia Experiment" and "TNT: Evilution," which originally appeared as "Final Doom" in 1996, and "Doom" original designer John Romero's last year release " Sigil" will be included; Bethesda says other add-ons, both professional and fan-made, will be collected throughout the past 25 years and will all be free, although for QA purposes, WAD creators will not be able to upload their own content through this system. Bethesda has stated that they "have already begun tracking members of the Doom community and discussing releasing add-ons for them, and hope to release more in the future"

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Doom and Doom 2 have also been enhanced to run at 60fps instead of the original 35fps, and new quality-of-life features such as better level selection and an aspect ratio option that stretches the display vertically to match the 4:3 aspect ratio of the original films features are given. Some of these enhancements, such as a new quick save option and a quick weapon select menu on the d-pad, are primarily for the console version (you're not playing Doom 2 with a controller, are you?), but they are all available in the PC All are also available in the PC version, available from the launcher on Bethesda.net.

The enhanced versions of Doom and Doom 2 are actually separate from the existing releases: if you already own them on Bethesda.net, they will be added to your collection as Doom Classic (2019 Release) and Doom 2 (2019 Release); if not will get both the original DOS-based version and the new enhanced version if purchased in the future.

For more information on the changes in the Doom and Doom 2 updates, see the patch notes on bethesda.net.