
Fallout creator Tim Cain has weighed in on the pros and cons of long RPGs. You may think the Fallout games are long, but the original can be beaten in around 20 hours, which is pretty quick by modern RPG standards.
Speaking on his YouTube channel, Cain says, by "long," he means RPGs that take 100 hours to complete or more. He briefly compares Fallout and one of his later games, Arcanum: Of Steamworks and Magick Obscura – which was designed to take 40-80 hours, but could stretch to 100+ if you wanted to do absolutely everything.