Skyrim's version of Radiant AI was developed from a drawing Todd Howard made on a napkin

With Oblivion Remastered sucking up everyone's time, there's a whole new generation of people getting to enjoy Cyrodiil's weird NPCs—and for us Oblivion vets, it's a chance to reconnect with some old pals. There was so much to love about Bethesda's gargantuan RPG back in 2006, but the vast array of eccentric characters wandering around the world, doing their own thing, really set it apart from the previous Elder Scrolls.

This was down to Radiant AI, which Bethesda has continued to use in all of its RPGs since.