Podcasts like Endless Thread

"Rome, Sweet Rome" is an alternative history and military science fiction short story by American freelance writer and military historian James Erwin. Posted online on Reddit under his handle Prufrock451 on August 21, 2011, it describes what might happen if a United States Marine Corps expeditionary unit were somehow transported back to the time of the Roman Empire under Augustus Caesar. The first few installments were published on Reddit, corresponding to the first eight days of the Marines' arrival.

Several years later, the hosts of the National Public Radio program Endless Thread call the short story "one of the most famous creative anachronism ever made by the Internet... an anachronism that was going to be huge, like a Ridley Scott movie huge,... plucked from obscurity, optioned by Hollywood, and then never to be heard from again."