Versions of Doom, Doom II and Heretic have been shown running on the Atari Jaguar.
These homebrew ports are the work of Welshworrier, Rik Day, Lawrence Staveley, Saturn and Matt Smith.
Doom: Slayer Edition is an enhanced version of the original Jaguar title which reinstates some of the elements which were removed from the retail release back in 1994. It boasts in-game music, a cheat menu and Pro Controller support, as well as other goodies.
Doom II and Heretic are two entirely new ports for Atari's 64-bit console. Heretic is at a very early stage, as you can see from the footage below. Release dates for all three games are unknown at this stage.