I didn’t see anything immediate on google to share a link, but I have seen a few posts regarding a pdf inscription that has executable code. I saw another post saying that they were viewing ordinals and the site asked for permission to use the camera. That was enough for me to avoid going too much deeper into viewing the ordinals.

Inscription 466 is a Doom like game that you could play in your browser. So yes some are code.

https://rareordinals.art/2023/02/05/inscription-466-first-3d-game-doom/