Mr. Nightmare is an American YouTuber who makes horror-centered videos in a read-aloud format, and with subtitles. Fan favorite series include True Real-Life Scary Stories and many others stories. Their channel mostly focuses on the subject of horror and real-life stories. While his videos mainly focus on the subgenre of psychological horror, it can also focus on horror-thriller and supernatural horror. His content varies from scary video game glitches to bone-chilling horror stories that are allegedly true.

His early content mainly consisted of creepypastas, interactive horror stories and other fictionalized stories. However he no longer makes these kind of videos, and instead focuses on real-life stories. Most of his older content has since been deleted or privatized, though some of them have been re-uploaded by other YouTubers.

Most videos are done by recording himself reading stories aloud from a first-person perspective, often with added eerie sound effects and scary music for immersion. He allows viewers and fans to submit horror stories to be read aloud and uploaded onto his channel. In addition to true scary stories, he also makes other horror-themed content including clips from horror films, Top 10s and third-person stories. The uploading of his videos is unscheduled, however it does say in his channel banner that he uploads 2 videos a week. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.