A fan-coded version of DOOM literally turns the classic PC title on its side by allowing the entire game to be played in Portrait mode. Created way back in 1993 by the now-legendary id Software, the original DOOM generated both praise and controversy in equal measure and helped pioneer the first-person shooter genre by inspiring a wave of DOOM imitators. Even in modern times, when the first person shooter genre has changed and evolved in considerable ways, DOOM and its clones still enjoy a place of honor amongst the gaming community.

Putting players in the boots of a futuristic space marine tasked with fending off the hordes of Hell on Mars, DOOM's legacy continues thanks to its various sequels, like last year’s DOOM Eternal. There have also been plenty of fan mods to the original DOOM over the years, with some players updating its retro graphics to modern systems, playing it on an experimental 3D holographic display, and even turning the whole thing into a crossover with the equally controversial and groundbreaking Mortal Kombat.

Related: 5 Easiest Bosses In The DOOM Series (& 5 Hardest)

Now, fans can enjoy the original DOOM in an entirely new way: vertically. Youtuber LGR, who has previously done videos on retro PC games and hardware, posted his latest video yesterday about an alternate version of DOOM that can be played in Landscape called TOOM. The name is derived from the term “Tate mode,” which is a setting that switches a given title’s perspective from the standard horizontal Landscape format to a vertical one. LGR himself previously doubted that such a feature for DOOM existed, but he is happily proven wrong as he plays TOOM on his old-school Radius Pivot monitor. The game itself even gives a tongue-in-cheek explanation for the change in perspective, with players stepping into the role of space marine Ian Doombloke - who suffers from a rare medical condition that leaves his head stuck at a 90-degree angle.

Watch LGR's video about TOOM here.

Retro-based hacks like TOOM are quite common among old-school gaming enthusiasts. Aside from hooking up modern consoles like the PlayStation 5 and Xbox Series X to vintage CRT monitors, fans have been bringing the past back by adding the popular “hard drop” function to the original Tetris and emulating old PS1 and Sega Dreamcast games with 2019’s MediEvil Remake. It works the other way around as well, with modders reskinning modern titles like Cyberpunk 2077 to look more like DOOM.

Just the idea of running the original DOOM in a vertical Portrait view is a remarkable feat in and of itself, as is the fact that TOOM’s creators went out of their way to provide an in-universe explanation for the change in perspective in the game’s Read Me files. Nostalgic fans that want to experience the classic DOOM in a whole new way can now turn the demon-invested world of Mars on its side by playing TOOM on either a current monitor or a Radius Pivot.

Next: DOOM Roguelike Jupiter Hell To Add Mass Effect Shepard Actor At Launch

Source: LGR/YouTube