Undertale Demo



The Undertale Demo was released on May 23, 2013, and can be downloaded from the official website.

Description
The Undertale Demo is extremely brief, buggy, and less detailed compared to the final game. It begins when the protagonist first falls into the Ruins and ends with Flowey's judgment right after the encounter with Toriel.

Toby Fox has stated that the demo has a much higher encounter rate in the first area compared to the final game. Also, EXP can be gained simply by dealing damage to enemies, not just killing them.

Endings
Flowey's dialogue varies depending on the route taken.
 * Pacifist Route: Flowey will say the same things that he says on a Pacifist Route in the full game. However, Sans and Papyrus will make an appearance on the credits screen.
 * Neutral Route: Flowey will say a variety of different things depending on what actions were taken, which are the same in the main game. These are detailed on Flowey's page.
 * Genocide Route: Flowey will say the same things that he says on a Genocide Route in the full game. The credits screen displays red text, which simply reads "That was fun. Let's finish the job."

Manual
The Undertale Demo comes with a manual, which details the mechanics of the game and some of the characters. The manual will change depending on the actions taken throughout the demo :
 * Killed Toriel: The final page of the manual will display a picture of Flowey grinning, and the message "Hahaha... You didn't even try to spare her. You murderer."
 * Spared Toriel: Flowey will be absent from the final page, and it will simply say "Don't get too cocky."
 * Genocide Route: All pages except the last and the first will change to the Undertale logo with the words " That was fun. Let's finish the job. " The first page will remain normal, and the last page will display a faceless Flowey with no dialogue.

Trivia

 * The demo of the game is titled UnderTale rather than UNDERTALE.
 * The manual was removed from the final version of the game; partly for being too complex to work with, and partly because the version of GameMaker Studio used in the final has more restrictions on editing the external files.
 * All names can be used in this version, even names that are forbidden in the final version of the game.
 * In the final game, if Toriel is killed, and then the protagonist goes to sleep, two messages will be displayed. In the demo, only one of the two appears.
 * If the protagonist returns to the starting point of the game, Toriel will be standing by the golden flowers where the protagonist is first seen. She will ask the protagonist not to worry about her, and say that someone must watch the flowers. This will happen even if the protagonist kills Toriel.
 * Alt-Tabbing while moving has no effect on enemy encounters or walk animation in the Demo, unlike the final product.
 * When decompiled, the demo contains a hidden message from Toby Fox. It asks for those who decompiled the demo not to spoil anything and not to modify the code until after it is released.
 * If all the monsters for the Genocide ending are killed, but the Vegetoids in the room where "there is only one switch" are continually killed, the game will return to a Neutral Route.
 * By killing these Vegetoids, it is possible to increase the LV stat over what is usually allowed.
 * The first screen of the demo's introduction makes an appearance in the Neutral Route of the final version.
 * Pressing "C" while the "!" monster encounter icon pops up will prevent the encounter from happening.
 * On the Genocide route, when the kill counter is exhausted, Your Best Friend will play in place of the song found in the final game.
 * Should one edit the SAVE file in the game files, a buggy screen will appear that first reads "La, la. Time to wake up and smell the pain. Though.... it is a little shaky." will appear, followed by randomly generated text.