tumblr won't let me directly upload the video so here you go. It's also on the Internet Archive. Also, all the frames are there too, so you can edit them and make a continuation or your own version.
this is the version that's not actually accurate to the book. I wasn't even supposed to be making an animation but I got carried away.
the volume is a bit quieter than it should be since I forgot I have to have the microphone right in front of me.
[Video description start: A short video animation based on Flatland: A Romance of Many Dimensions, with built in subtitles and a voiceover from a single person, showing the narrator of the book, drawn as an orange and gold square, interacting with the King of Lineland.
At the top of the screen is a long grey rectangle, with two black lines representing Linelanders on either side, each with a white eye on their points. At the bottom of the screen is a box labeled, "The King's View", which starts out filled in with light grey, marching the eye on the smaller line across from the king.
The line on the right is longer to represent the King, and the Square stands below him on the screen, demanding, "Hey, Woman! What's wth this weird line you're all standing in?".
The two lines visible think to themselves in parenthesis, "(I thought I heard something...)" "(Huh?)".
The narrator demands again, "Woman! Why do you ignore me? Answer my question!".
The King wonders to himself, "(What is that weird sound??)".
The narrator snaps, "Answer me when I speak to you, woman!".
The King things, "(Okay I know I heard something that time!)".
"Ugh! Unbelievable!" the narrator says in anger, "I'll show her to ignore me!" He moves forward and puts his face in front of the King's, saying, with sarcastic annoyance, "Excuse me!".
At the bottom of the screen, the box showing the King's view is now the same gold as the narrator's outline.
The Linelanders exclaim, "Woah," and "Agh!".
The narrator demands, "What are you all doing standing in a line like this, woman? I've asked three times!".
The King responds, "I'm not a woman! I'm the King! And where the crap did you come from?".
The narrator says, "I'm sorry for mistaking you for a woman, Your Majesty, but you didn't answer my question. Why are you all standing in a line like this?".
"Nevermind that," the King says, "Where did you come from?".
The narrator replies, condescendingly, "From the side, obviously.".
The king replies, "You didn't come from the side, you're not my neighbor!".
"Not in front of you, I came from your other side. Your South side.". The Narrator says.
"South? What does that mean?" the King asks.
"You know, South! You're facing East, I came from your South.".
The king says, "I'm facing East and West. You didn't come from the West.".
"South doesn't mean West, it means South.".
"Then what does South mean?".
"What do you mean you don't know what South means? Just turn and look!"
"Turn? What does this mean?".
"You don't even know what turning is?? Okay, look, watch, I'll demonstrate which way South is.". The narrator moves over to the side, closer to the center of the screen, saying, "Let me move over first so I don't hit you by accident.". When he is in the center of the screen, so that his sides won't hit the king he says, "Okay, are you watching?".
"Yes..." the King says skeptically.
The narrator moves forward a little, towards the top of the screen, saying, "I Nove north...". Then he starts to move backward, saying, "And...I move South." As he says this, he moves backwards out of Lineland entirely. The box at the bottom turns grey again as the narrator is no longer in the King's line of sight. The narrator says, "See?".
The King demands, "See what? you've disappeared!".
The narrator says, "I moved South. You saw, didn't you?".
The king replies, "You didn't move at all! You're using some kind of trick to hide! You are a liar!"
The narrator pushes himself back into Lineland to say, "I'm not a liar! You're just too One Dimensional to see all of me at once!".
The kind exclaims, "Of course I'm One Dimensional, there is only One Dimension!".
"No, there's two!". the narrator says.
"Then prove it!" says the King.
"I already did!".
"You didn't do anything! Stop talking nonsense or leave my Kingdom!".
"Make me why don't you!" the narrator shouts back.
The King shouts, "Maybe I will! Men! Charge!"
The King and his neighbor behin to rush towards the narrator, with other lines followin them. The narrator says quietly just a moment before being hit, "Oh crap.".
The screen goes black, the voicover says, "Boom", and two white stars slowly expand and then contract again to show the narrator being hit by the Linelanders.
When the stars fade, we see the narrator asleep in his bed, which is a purple cushion with arms wrapped around him to cover all but one of his points.
An exclamation mark appears over his head as he wakes up in alarm, then bursts out of bed, shouting, "Aagh!" in shock.
Then he spins in place, saying, "Huh? Wha?" then he subsides, sinking down sligtly towards the bed again, saying, "...huh...I guess it was just a dream..."
He sinks back into the bed and pulls one of the blanket sections over him, saying, "I'm going back to bed..." then pulls the other blanket half over, saying, "That was weird...".
The video ends. End of video description.]