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The Games We Play by FoundUser, Primordial_Rebel_Jester
Fandoms: Deltarune (Video Game), Undertale (Video Game)
08 Sep 2025
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Summary
There are infinite opportunities in this world. Infinite opportunities for dreams. Infinite opportunities for hopes. Infinite opportunities for regrets... for loss.
There are some memories you would rather just forget...
The old royal scientist knew that better than anyone.
BRIGHT, BRIGHTER, YET BRIGHTER. SO YOU STILL SHINE ON, EVEN AFTER EVERYTHING YOU ENDURED. EVEN THROUGH THE COLDEST NIGHT.
But a story doesn't have to end the same way.
EXCELLENT. TRULY, EXCELLENT. LET US BEGIN THE CREATION OF OUR NEW FUTURE.
Sometimes... a game can have a secret ending.
(A Deltarune novelization that takes some unexpected turns from canon. Based on some theories, and a little bit of imagination, even the unknown can make itself known.)
(Custom Art and beta'd by Primordial_Rebel_Jester. Story by FoundUser.)
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Summary
You freaks have played Undertale, right? Once the story's over, you ever wonder what becomes of that one creepy kid who ate all those buttercups? Well, wonder no more! Because my name is Chara Dreemurr, and I'm here to tell my story. A possible version of that story, anyway; one where I get sick of being dead and decide to get proactive about it. It may or may not end well.
Anyway, read the tags if you want an idea of what the hell's going on here, despair at the lack of shipping tags, gape in horror at the number of depressing tags that had to be added on my account, and strap yourselves in. I have a lot of personal issues to work through and I haven't had chocolate in about a hundred years, so this is probably going to get worse before it gets better. =)
Series
- Part 1 of Demon Respawn
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"Long ago, two races ruled over the Earth: HUMANS and MONSTERS. One day, war broke out between the two races. After a long battle, the humans were victorious. They sealed the monsters underground with a magic spell..."
History is always told by the living, and the victors. The war was not won in a day, and the monsters were not sealed without consequence. This is the story of the mages responsible for the barrier, and how the war came to an end.
Series
- Part 1 of Undertale
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Honkaitale: Prologue by ThomasTheCoolKid
Fandoms: Undertale (Video Game), 崩坏3rd | Honkai Impact 3rd (Video Game)
30 Jun 2025
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Summary
An alternate version of the tale of humans and monsters, disrupted by the arrival of a force most alien.
Series
- Part 1 of Honkaitale
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Tales Of The Old by Marie_Rose321
Fandoms: Deltarune (Video Game), Undertale (Video Game)
13 Dec 2024
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Summary
A story which is set before the events of the rewritten version of Silent Gaze.
Series
- Part 1 of DeltaTale AU
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Dream, Or Sage? The nymph didn't know any more.
After being pulled into a universe where he can't leave, the guardian is finally able to get the well deserved break he wanted...... However his brother is making it clear to Dream that not relaxing will get done with him around.
Dream just wishes they could stop fighting.
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To the outsiders, Mount Ebott, the deep forest and its beach side was cursed. Otherworldly monsters, mythical and powerful beastly monsters at that, roamed the land and caused most of the forest and mountain to be closed off from the outside world and the ocean by the mountain to be terribly dangerous. Those that try to sneak or break in are cursed, punished or never seen again.
Or
Undertale Fans Isekai
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Summary
It's been three long years since the barrier broke.
In less than a day, Frisk befriended every monster in their path, shattered the barrier, and, in theory, freed them from their bondage. Frisk was a legend. Even those who never interacted with Frisk revered them.
Yet, their savior was missing. Frisk hasn't been seen or heard from since.
The surface had many moving parts. Being underground for hundreds of years left them with no knowledge of its machinations. The monsters were at a disadvantage. Politicians litigated to their heart's content, the mages schemed, and worst of all, the general populace was wholly unaccepting.
Worse still, Mosterkind remained underground. Only a select few were allowed to leave. Never very far either. Trapped behind a different barrier, a less physical one, but no less insurmountable.
That is until one day, Frisk returned, flanked by the two long-dead royal children. However, Frisk was different. More bombastic, unbelievably impulsive, and entirely more emotive.
Perhaps they should have stayed away.
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Kill F.risK Dr.Who vs WD by Yet Another Him (Telt)
Fandoms: Doctor Who (2005), Undertale (Video Game), Deltarune (Video Game)
14 Jul 2024
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Summary
The Doctor finds out the ends, that a child is willing to chase the truth.
And
The forces of the universe conspire to eliminate this risk.
Who? Doctor? I'm afraid that man has gone wibbley wobbley timey whimey, spacey wacey, out of placey.
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Encoded!Tale: In the Eyes of Gaster Wingdings by Rocket_Scientist
Fandoms: Undertale (Video Game), Deltarune (Video Game)
30 Nov 2023
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Summary
Another of my Undertale AU.
Gaster Wingdings, the man who speaks in hands. The shrouded mystery first spotted in the universe of Undertale.
But there is more of her that meets the eye. Many misunderstandings, now to be revealed. -
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Summary
"Pshh, i'm not a human." The definitively human child said right to Sans' face. "I'm a... Mummy?" You know what, as long as he wasn't a serial killer, Sans thought the kid could be whatever he said he was. Costume matched at least.
Or how lying is always morally correct and has no consequences ever, is totally never discovered, and does not single-handedly bring H.P. Riot music to the underground.
Series
- Part 3 of Local idiot gets isekai'd, more at 11
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Human magic before the Barrier was achieved through the Cooperative Connection, a bond wherein a monster gifts his or her memories, and thus a part of their soul, to a human. Discovered when Queen Toriel gifted a blind prince a blanket which she weaved in her memories of describing the starry sky far above her castle in the Monster Capital, the Cooperative Connection shines this trust both on the sleeves of human mages as well as in the relation between human and monster society. The trust of the Cooperative Connection exemplifies itself in the Monster Mages, humans whose magic makes them monsters in soul, tasked to protect monsterkind as the most powerful mages there are.
Follow Cter, as the consequences of the fusion between a human and a monster soul settles in with the world around the monsters, with the humans so much more powerful than them.
Humans now know what the monsters never did.
Series
- Part 8 of Soul of our Hearts
- Part 13 of One falls anthology
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Summary
Human magic before the Barrier was achieved through the Cooperative Connection, a bond wherein a monster gifts his or her memories, and thus a part of their soul, to a human. Discovered when Queen Toriel gifted a blind prince a blanket which she weaved in her memories of describing the starry sky far above her castle in the Monster Capital, the Cooperative Connection shines this trust both on the sleeves of human mages as well as in the relation between human and monster society. The trust of the Cooperative Connection exemplifies itself in the Monster Mages, humans whose magic makes them monsters in soul, tasked to protect monsterkind as the most powerful mages there are.
Follow Cter, as the consequences of the fusion between a human and a monster soul comes to change the world beyond what it did the human and the monster which died to form it.
A fusion to split an entire world.
Series
- Part 7 of Soul of our Hearts
- Part 12 of One falls anthology
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Summary
Human magic before the Barrier was achieved through the Cooperative Connection, a bond wherein a monster gifts his or her memories, and thus a part of their soul, to a human. Discovered when Queen Toriel gifted a blind prince a blanket which she weaved in her memories of describing the starry sky far above her castle in the Monster Capital, the Cooperative Connection shines this trust both on the sleeves of human mages as well as in the relation between human and monster society. The trust of the Cooperative Connection exemplifies itself in the Monster Mages, humans whose magic makes them monsters in soul, tasked to protect monsterkind as the most powerful mages there are.
Follow Cter, as she comes to understand what it means to have discovered something that should never have come to light. The truth of the Cooperative Connection, laid naked for the world to see.
And the consequences of its reversal.
Series
- Part 11 of One falls anthology
- Part 6 of Soul of our Hearts
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Summary
Human magic before the Barrier was achieved through the Cooperative Connection, a bond wherein a monster gifts his or her memories, and thus a part of their soul, to a human. Discovered when Queen Toriel gifted a blind prince a blanket which she weaved in her memories of describing the starry sky far above her castle in the Monster Capital, the Cooperative Connection shines this trust both on the sleeves of human mages as well as in the relation between human and monster society. The trust of the Cooperative Connection exemplifies itself in the Monster Mages, humans whose magic makes them monsters in soul, tasked to protect monsterkind as the most powerful mages there are.
Follow Cter, as she comes to understand what it means to have discovered her own magic as the Fourth Monster Mage, and thus having come closer to being a monster than any other human has ever done.
But what about the opposite?
Series
- Part 10 of One falls anthology
- Part 5 of Soul of our Hearts
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Summary
Human magic before the Barrier was achieved through the Cooperative Connection, a bond wherein a monster gifts his or her memories, and thus a part of their soul, to a human. Discovered when Queen Toriel gifted a blind prince a blanket which she weaved in her memories of describing the starry sky far above her castle in the Monster Capital, the Cooperative Connection shines this trust both on the sleeves of human mages as well as in the relation between human and monster society. The trust of the Cooperative Connection exemplifies itself in the Monster Mages, humans whose magic makes them monsters in soul, tasked to protect monsterkind as the most powerful mages there are.
Follow Cter, as she finds confidence in her role as the Fourth Monster Mage, to be the human of monster to protect her new people. Humans surround the monster nation, so the newly appointed Monster Mage has a lot of politics to do.
But will she able to look past those puffy wigs?
Series
- Part 3 of Soul of our Hearts
- Part 8 of One falls anthology
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Summary
Human magic before the Barrier was achieved through the Cooperative Connection, a bond wherein a monster gifts his or her memories, and thus a part of their soul, to a human. Discovered when Queen Toriel gifted a blind prince a blanket which she weaved in her memories of describing the starry sky far above her castle in the Monster Capital, the Cooperative Connection shines this trust both on the sleeves of human mages as well as in the relation between human and monster society. The trust of the Cooperative Connection exemplifies itself in the Monster Mages, humans whose magic makes them monsters in soul, tasked to protect monsterkind as the most powerful mages there are.
Follow Cter, the newly appointed Fourth Monster Mage, as she finds her way and place as one of the most powerful human mages there are. A human to become a monster in everything except her soul. She will live as a monster, represent them as best as she could.
But will she be able to stomach their cooking?
Series
- Part 2 of Soul of our Hearts
- Part 7 of One falls anthology
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Undertale Deltarune Theories by Kulev
Fandoms: Undertale (Video Game), Deltarune (Video Game)
12 Nov 2022
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The human with a black heart by Phan_tasma
Fandoms: Undertale (Video Game), Deltarune (Video Game)
14 Aug 2022
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Summary
This is not officially canon to my Undertale au but I thought I would add it here :)
Usually humans had some dictating feature of what their soul trait was, but this guy was making it really hard to tell.
And caros is to lazy to pull up his stats.
Series
- Part 1 of The judge was a stolen title
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Summary
⸻ 𝐌𝐔𝐋𝐓𝐈-𝐎𝐂 𝐈𝐍𝐒𝐄𝐑𝐓
⤷Sans has been through this over & over & over again. With each genocide led another nightmare he slowly grew used to seeing. But what if..Instead of 1..
3 humans fell that day?One of determination,
One of bravery,
Another of patience.【COPYRIGHT©】
@all rights reserved