What is an ORG?
Imagine for a moment you and your friends meet up and play a game of Monopoly in person. Monopoly is a very easy game to play in-person, as that's what the game is designed for, and you can easily pick up the game and play it randomly with your friends.
Now, imagine instead that you and your friends meet up and want to play a game of Survivor. You all enjoy the CBS reality competition show and would like to play it in-person (instead of playing the card game version for whatever reason). This is perfectly doable, might require some intentional planning and set-up but the actual structure of the game Survivor is fairly easy to replicate on your own at home.
Now, finally, imagine you and your friends cannot meet up but you want to play Survivor at your respective homes. You could play online, I guess, but you've already played Among Us fifty-thousand times, and you all really like Survivor in particular.
That is where ORGs come in.