{"id":1490992,"date":"2026-02-09T02:34:13","date_gmt":"2026-02-09T02:34:13","guid":{"rendered":"http:\/\/HZfd2qVbrzzBgr2vswUUxV"},"modified":"2026-02-09T02:34:13","modified_gmt":"2026-02-09T02:34:13","slug":"thanks-to-one-mad-modder-we-can-now-play-doom-on-an-in-game-terminal-in-ultrakill","status":"publish","type":"post","link":"https:\/\/arcader.org\/news\/thanks-to-one-mad-modder-we-can-now-play-doom-on-an-in-game-terminal-in-ultrakill\/","title":{"rendered":"Thanks to one mad modder, we can now play Doom on an in-game terminal in Ultrakill"},"content":{"rendered":"
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Doom can run on so many weird devices now, it’s easier to tally up the things that don’t support id’s 1993 masterpiece. But running a game inside another game always tickles my lizard brain, and Squaresweets on GitHub<\/a> has delivered: The Ultimate Doom, fully playable within the New Blood FPS Ultrakill<\/a>.<\/p>\n

Every level in Ultrakill begins with a diegetic shop terminal, sort of like the ones in Prey or the new (oh god, the newest one is 10 years old now) Deus Exes: You can walk up and seamlessly use your mouse to select loadouts without the game pausing, locking you in place, or hijacking the screen for a disconnected UI window. It’s a neat effect I’m always happy to see, and now protagonist bot V1 can use it to get some frags in before it gets some frags in.<\/p>\n

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Squaresweets built off the work of xabblll’s DoomInUnityInspector<\/a> and sinshu’s managed-doom<\/a> source port. Sinshu’s source port was written in the Unity-compatible C# language, and xabblll’s project got Doom running within the Unity editor. Squaresweets then brought it across the finish line to run in an actual Unity game.<\/p>\n

You’ll need a .wad file of a version of Doom 1 to supply the art and assets for Squaresweets’ ultradoom.wad\u2060\u2014at the time of writing, Ultradoom does not support any user-made projects like MyHouse.wad<\/a>. That DOOM.wad can be sourced from a retail copy of Doom\u2060\u2014I pulled mine from the Nightdive re-release\u2060\u2014or the shareware version, which you can still get for free on the DoomWorld forum<\/a>. Installation also requires the BepinEx Unity modding utility<\/a>. Here’s the quick and dirty:<\/p>\n