As Doom continues to be played on just about every piece of technology available, things have finally gone full circle as someone has now made Doom playable in, well, Doom.
As spotted by PCGamesN, YouTube user kgsws uploaded a video of himself modding the game into itself, before showing actual gameplay of him playing Doom within Doom on PC.
The 'inner' Doom replaces a wall within regular Doom and mimics any movements the player makes. By walking right up to it, the inner Doom therefore takes up the full screen and can be played in its entirety before players return to playing the main game.
While there's obviously not much practical use for this, it's just another fun and ridiculous way players have found to play the classic 1993 shooter. Other recent examples include playing Doom on a McDonald's kiosk, on Twitter, and even a pregnancy test.
They join a much longer list that includes a LEGO brick, an ATM, a potato-powered calculator, a treadmill, and more.
For those looking for a more modern and, dare we say, normal way to play Doom, the latest game in the franchise, Doom Eternal, would be a good choice. In our 9/10 review, IGN said: "Whether you're a new Doom fan or a veteran one, Doom Eternal is bound to delight & entertain you. It's gloriously fun."
Ryan Dinsdale is an IGN freelancer who occasionally remembers to tweet @thelastdinsdale. He'll talk about The Witcher all day.