How this started

How did this idea of an AU start?

I, TheDiamondWolfGames on Roblox, was roleplaying in the Galactic Civil War era on a game called Timelines RP, (below) I chose to make Vader strike down Palpatine as he attempted to throw lightning at Luke, his saber blocked the lightning, in front of Luke, and then sliced him down, this lead to the formation of the New Clone Republic later in the roleplay.

https://web.roblox.com/games/2983517583/TIMELINES-XL-RP

https://web.roblox.com/games/21544196/TIMELINES-RP