Unus Annus

Unus Annus is a YouTube channel created by Markiplier and CrankGameplays. This channel is planned to be deleted exactly after a year, with none of its content re-uploaded in their own channels, and all of its merch no longer available then. Hence, they suggest viewers create memories in their unique experiences.

History
Three days after its initial launch, Markiplier and CrankGameplays uploaded a video on the same day with the same title, "This Will End in One Year". Both videos have them explaining their new channel in a monotonous voice and a formal look. To promote their channel, Markiplier changed his profile picture to a blank white, while CrankGameplays changed his to a blank black.

Quotes

 * "Memento mori. Unus annus."

Trivia

 * Their channel name is a Latin phrase for "one year", which explains the channel's lifespan.