A talented player has taken Doom modding to the next level, by starting the game inside another copy of Doom
The legendary game developer id Software first launched the Doom original in 1993, where it helped pioneer the 3D first-person shooter genre along with other retro titles like Quake.
As one of the first major titles for PC of the early 1990s, both Doom as its sequel 1994 were instrumental in the creation of the modding community PC that continues to find new and imaginative ways to play popular video games to this day.
Now modder kgsws is taking things to the next level, as demonstrated in a video posted on his YouTube channel (via PC Gamer).
In this long video, kgsws explains how they were able to run Doom inside another copy of Doom using an exploit code in the original version of FROM of Doom 2 to import a modified version of the source code of Doom.
Kgsws even builds an in-game theater inside Doom to play Doom. Complete with lobby screens explaining how they achieved the export and the ability for the player to seamlessly jump between the two running copies of Doom.
Curious modders looking to try this out for themselves should note that the code exploit that makes this possible was removed from later versions of Doom because it could be used to spread malicious code, but they can execute Doom-within-Doom modified from kgsws in version FROM of Doom available in Steam via DosBox.
Even though modders continue to find new and creative outlets to play the Doom original. The series is enjoying something of a revival thanks to the successful launch of Doom Eternal of 2020.
Meanwhile, the co-creator of Doom, John Romero recently shared a copy on CD rare of the final physical version of the original game. Not long after he helped launch a new level of Doom 2 to raise relief funds for Ukraine.
More recently, the first images of the Doom 4 unreleased were discovered as part of a YouTube gaming documentary, showing a look at what eventually became the reboot of Doom from 2016.