Doom Classic Unity port

The Doom Classic Unity port is a series of official ports of Doom and Doom II initially developed by Nerve Software in cooperation with id Software and first published by Bethesda on as part of the "Year of Doom" promotional campaign. It was initially announced on stage during the QuakeCon 2019 (DoomCon) keynote presentation. The port is based on the Doom Classic codebase, but replaces the id Tech 4 shell with one based on the game engine. This offers immediate portability to a wide array of targets - the Doom and Doom II ports were available at launch for the Sony PlayStation 4, Nintendo Switch, Microsoft Xbox One, the app store for, and Apple's iOS app store.