Thanks to the runaway success of The Blair Witch Project in 1999, found footage movies quickly became the hottest thing in horror. By relying on camcorders, surveillance footage, and other unlikely camera sources, filmmakers could not only add some verisimilitude to their stories but could also do it on the cheap. But just as quickly, found footage became the most hated subgenre, as fans and critics decried its rigid constraints, laughing at the ridiculous ways characters justified recording when they should be running.

Just as the subgenre died, a new and more relevant approach emerged: desktop movies taking place entirely on computer screens, using webcams, streaming video, and recordings to tell their stories. Not only do desktop movies offer more variety in visual style, but they also better reflect our actual lives, as we spend a lot of time staring at computer and phone screens.

Exciting as the subgenre certainly is,...