Fun fact: Vault 13: A GURPS Post-Nuclear Adventure was an early working title for Fallout, later changed to Fallout: A GURPS Post-Nuclear Adventure that utilized the Generic Universal Role Playing System (GURPS) by Steve Jackson Games. Legal disagreements between Interplay Entertainment and Steve Jackson Games eventually led to Interplay dropping the license and replacing it with its own system, developed in-house: SPECIAL.
Oh that's interesting. Someone mentioned gurps, but I assumed it was to turn it into a ttrpg. I do quite like the special system though, and it kind of fits with the theme in the way it's presented.
I wonder if Fallout had ended up using GURPS, yet remained as beloved, would it have elevated GURPS the way the original BG games elevated AD&D in the broader geek public consciousness?