Something New Danmaged (Killer sans)
So, there were 2 concepts i was making for this take right here
One i started making along with Flambeworm370, but later on had a little bit of help of Low_Tus on it, which was cool, i will explain in a little bit
And the other concept i made alone, and that i was maybe, maybe not turn it into something more elaborated, but eh, just made 2 stupid fnf song concepts for it instead of actually working on the take lmao
But anyways, the first concept is meant to be kinda of a "fixed" version of Killer sans, or at least a version that tries to be a bit more grounded and, i guess interesting? Eh just a version that is less of a dusttale sans knockoff really lmao
The concept was that in this take of Something New, it follows the story of a player of Undertale deciding to try and make a modded version of the game where he would be able to play as other characters aside from Frisk, to try and see how cool it could possibly be if he, for example, did a pacifist route as playing toriel. Which would be cool right? Well, would if the first thing that the guy tried to do wasn't trying to make a genocide route while playing as Sans. Yeah, the concept would follow the story of the Player forcibly shoving his control onto Sans, and making him commit a genocide route, as the character itself, different from Frisk that is a perfect vessel, would begin to slowly break down into an absolute ruined husk as the player would continue to force Sans to murder everyone.
The gameplay would show sans slowly beginning to degrade as the kills build up, with his colors growing darker and more dull, while his expression would slowly morph into one of pure insanity, with the ending of the game actually surrounding around the idea of the game forcing the control of the player out from Sans moments before he could be able to finish the genocide run, putting the player to play as Frisk once more as he would have to face the now distorted version of Sans that he created himself in the judgement hall.
That would be the idea, i tried to develop it for a long while along with Flambe before Low_Tus began to take interest on it and suggesting a few things on how i could improve the storyline and designs, until i eventually stopped working on the take as a whole.
The second concept that i made alone has points related to the old concept, but doesn't fully reuses it
My second take on Something New would follow, again, a player managing to take control over Sans and forcing him to do a genocide run. But the story would actually focus on the aftermath of the event, as the plot point that would start the story would be the player using some of the functions that Sans has to go to the core and make the entire thing explode. Why? I don't know, the player was a psycho lol
After the core would explode, the story would follow what happened next, as Sans would find himself in the middle of the snowdin forest, not being able to remember what happened, as he would slowly begin to venture through the now destroyed underground, slowly taking hints at what could possibly have happened as he would slowly begin to remember about a certain "target symbol" that could perhaps be the answer as to what had happened down in the underground for it to be not only empty, but completely wrecked.
The journey would be simple, walk around with Sans around the empty destroyed underground, and try to find hints to slowly discover what happened while also trying to remember where exactly did Sans see that "target symbol" he keeps on remembering, and it would go like that for a while until the ending would be the big revelation. The ending would happen after Sans manages to get back to hotland, going inside the ruins of what were Alphys' lab, and managing to find a way inside the True Lab, to which inside he would be able to find a bunch of tvs and a bunch of tapes, as Sans would go to watch tape to tape and discover that they were recordings from Alphys' hidden cams from all around the underground, to which all of them would have managed to record not only Sans being taken control over an "external force", but also the moments Sans went on to murder everyone in the underground out of nowhere.
This would be the ending for the story, as by the moment Sans would finish watching the last tape, he would keep on watching the blue menu screen of the VHS before slowly snapping at what he had saw, with black liquid beginning to leak out from one of his eyes as all he can yell to himself would be "IT WASN'T ME"
And that's the end of the story, it wasn't meant to have any explanation as to how did the player take control over sans, or why they decided to kill everyone, as the point of the story was to display the aftermath only, the slowly spiral into insanity that sans would go through as he's left clueless to the fact he was the one that made his entire kind go extinct, not that it was actually him but, it's not like he would be able to guess that there was someone controlling him.
A little fun fact about this version is that, during some point on the story Sans would develop constant migraines and headaches, with Sans soon discovering that the reason his head was hurting so much was because of one of his eyes, which made his head hurt so much to the point that Sans wouldn't be able to handle the pain anymore, and shove his hand inside his eye-socket, forcibly pulling his Judgement Eye out and throwing it on the floor, discovering that his Judgement eye had turned fully red. That would be the reason of why Sans is missing an eye, he pulled it out by not being able to handle the massive head-aches it was making him have.