Learned about the "Wuselfaktor" yesterday when talking about Settlers II for 
@dosgameclub💾 DOS GAME CLUB 💾
It's a German concept that describes how interesting and nice a game is to look at without the player doing anything in particular.
It's especially relevant for simulation type games, where your screen is filled with a bunch of characters that are each working on their own task.
Settlers II has a very high Wuselfaktor, but so do games like Lemmings or Transport Tycoon.
