So I read a couple of ebooks many years ago which described a sort of a post-apocalyptic earth where (it is later revealed) magic is facilitated by a nano computers which realize the will of the user (presumably by reading their mind, or through incantations, maybe some sort of matrix... I don't recall exactly). The experiment I suppose had gone wrong and wiped out many humans and created many Gods.
The story also featured Gods who acted more like egoistical overpowered mafia bosses running some sort of insurance businesses.
The protagonist (or one of them, I don't recall) was an uber powerful god who wiped his own memory for some reason(can't recall why) and lived as a human. He was also one of the scientists pre apocalypse who worked on the project that created the computers
Also I think technological advancement as illegal as it was seen threatening to Gods.
Also most of the humans had no idea about the experiment or the times before the catastrophy. Technology was rather primitive compared to modern times.