u/A_Person1246

So I have an idea for a campaign pulling from a more science fiction perspective. I love the concept of a post apocalypse world where humans are reset back to antiquity levels of tech, however there are still elements of hyper advanced tech in the world (think the horizon series). I like the idea of haunt magic be replaced with this hyper advanced tech and some people who are highly devoted to the craft are able to get small bits and bobs functioning again. Does anyone have any tips for running this in dnd, or if anyone knows a good system for this style of world?