Looking for a webnovel system-apocalypse style, but in the forgotten realms!

[ciopo]

Greetings people

I've recently thought that it would be cool that if there was a litrpg/gamelite novel of the "system apocalypse" genre.
But! Instead of being the usual "suddenly, earth has a system!", what if something like that happened in one of the many prime planes of D&D 3.5 cosmology?
World until now is as codified by the 3.5 rules, (but not gamelit!), and then system apocalypse style suddenly there is this system, that not necessarily maps to the known D&D leveling/classes/feats/spell slots and so on

I think it would be interesting to read

does anyone know of any novel whose worldbuilding is along these lines? ( or similar! )

thanks pals

[Palanan]

“If there's a book that you want to read, but it hasn't been written yet, then you must write it.”

― Toni Morrison

[ciopo]

that is fair :) but maybe someone had read something similar

Ar'Kendrithyst is kind of vaguely like that, for example, (it isn't, but kinda is)