A now dead channel featuring Mark Fischbach and Ethan Nestor with the purpose of deleting in a year's time. The channel was meant to showcase the idea that we as humans only have so much time, and that the clock on our lives is always ticking. The channel was light in content but usually had dark undertones of death and the inevitability that one day we will not be remembered. The idea of making the most of the time we have remaining in our lives was frequently brought up in videos, both subtly and subliminally. Unus and Annus, the two characters of the channel were the face of many conspiracy theories and lore regarding who they were, how they came to be and if they could stop the clock that counted down until the day they died, when the channel was deleted. The beginning and end of each video was displayed with a ticking timer counting down the days, hours, minutes and seconds of how much time the channel had left to live. Despite the begging of fans and friends alike, on November 13th, 2020 the Unus Annus youtube channel was deleted, along with its 365 videos, lore, characters, secret messages and mysteries never fully discovered. The channel is forever gone now, but the memory of Unus Annus lives on in the minds of fans and the 4 million subscribers that followed the channel to its death. The clock is ticking for us all, and one day we will die. Let us make the most of the time we have left. Memento Mori. Unus Annus.
Memento Mori. Unus Annus.
by 1234i54332i3i3 November 16, 2020
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1. Unus Annus Is a channel made by Markiplier and Crankgameplays and will be deleted on November 14th, 2020. It teaches its viewers about the inevitability of death and how the clock is always ticking.

2. Your time is up loser
only joking
Memento Mori, Unus Annus :))
Lincoln, lord of Link: "Yo remember Unus Annus?"
Lord Lincoln of the Link: "...It died yesterday why are you rubbing salt in my wounds"
by candalie November 15, 2020
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Unus Annus (lat. = One Year) was a project on YouTube made by Markiplier, as Annus, and Crankgameplays, as Unus.

The reason behind the channel was to enjoy the time you had, live in the moment, and remember that everything comes to an end eventually.

(Also worth noting: Memento Mori = Remember Death)

They would upload every day for a year and delete the whole channel after the clock stops ticking.

Memento Mori
Unus Annus
A: Did you watch the new Unus Annus video?

B: Yes of course I did! What's your favorite video by the way?

A: Hard to say... I think "Helium Therapy" was really cool.

B: My favorite video was "Mark knows what Ethan did" to be honest haha.

By the way, are you an Unus or an Annus?

A: I am an I Unus, and you?

B: I am Norbert actually.

(Norbert Moses was a fusion of Mark and Ethan)
by Vaniffective November 3, 2020
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They’re gone. You know that their gone. We need to move on. You need to move on.
by izumis_vibezz May 27, 2021
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20 years from now
Son: Hey dad what’s Unus Annus
Dad: Momento Mori
Son:?
by FrozenWaffle November 6, 2020
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