Let's assume that the world is a (rather crude, video-game-like) simulation and that each sentient being is just a program running in the system. The universe resembles our own on the macroscopic level, although it is vastly simplified on the molecular level - more like a physics engine from a video game than any kind of "realistic" simulation.
The world is internally consistent, there are clearly defined "laws of nature" that can be studied and experimented upon, generally a scientific approach is possible and a "modern", science-based civilization has developed. Supernatural effects are rare and hard to replicate, so they are usually labeled as myths and ignored by the scientific community. Gods do exist (they are independent AIs maintaining the system), but they mostly work in cover and try to "impersonate" natural events.
This is a setting for a planned RPG campaign, and I try to sort & classify possible sources (or types) of supernatural abilities that characters could have or obtain - mostly to boil them down to manageable set of rules, but also for internal consistence of the setting.
I am not interested in subtle details like visual style, but rather in a general classification - where did the power came from, how easily is it used, what could be the consequences of error (if it can fail at all, maybe it's something that "just works").
So far I have identified three possible sources/types of power:
- Special privileges granted by the system. Various priests, shamans, cultists etc come to mind - the power is a contract, a gift from greater power/AI, and it can be revoked at any time if the benefactor wishes so. Usually the power "just works" if you follow the instructions (prayer, magic formula etc).
- Consciously hacking the fabric of reality. The hacker might be a rebel, but may also be an official "debugger" of some kind, testing the system from within. Either way, using the power is extremely dangerous - even with skill and knowledge the result is always chaotic and unpredictable, especially if the system is "live" and constantly patched/modified.
- Some kind of glitch in the world's engine or data. Technically this is not even a "supernatural" ability (although it looks like one), but rather a special exception in the laws of nature. It also "just works", it feels as natural as any other skill or ability (for instance breathing).
Are these really all possible options? Did I miss anything? Maybe there's some other source/type/style of power that I forgot to include?
NOTE: This question has been edited a few times, each time changing its scope "a bit". I'm sorry for the confusion.