Could it be possible to run Doom and other games on an Apple Vision Pro? I think so. The Apple Vision Pro is running a standard Apple OS with Darwin kernel 23.1.0 and uses a 64-bit ARM CPU. So it could run a port of Doom easily. It has an 8-core CPU, so this would be fine running a 3d-shooter. Imagine if the hand tracking worked and you could reach out to grab a medikit or press a switch. And with 16 gigabytes of RAM, it could handle very large maps. This port of Doom runs on iOS and supports touch controls, someone should try this.
https://apps.apple.com/us/app/doom/id336347946 Doom on iOS.
Maybe it would be better to port Gzdoom instead, I have found a post here: https://forum.zdoom.org/viewtopic.php?t=72910. This is the source code for a version of Gzdoom that compiles and runs for iPad, it could be made to work on the Apple Vision Pro. This would be an interesting port for sure.
I mean, someone got a Doom game running on an Apple IIe using the Myst engine, so it must be possible.
http://www.deater.net/weave/vmwprod/vgi/doom.html.
Doom running on an 8088 CPU. This means you can run Doom on a 286 now.