Your Interdimensional Desert Island Game Choices Part 2 One System

This is a follow up to Fridays post.

same scenario as before.

This time however the same marginally benevolent aliens with inscrutable motivations (MBAWIM) allow you everything published for one system, circa I dunno 2012


My choice would be 3x. Originally I'd choose GURPS but GURPS would remind me of the real world far too often. 3x is much more escapist fare.

It also has several thousand books and PDFs. With that hundred years to waste I could try a whole lot of things I'd never have time to try. Heck I might even use as much as 1/4 of the supplements ;)

What would you choose?