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[[caption-width-right:350:[[TagLine The Friendly RPG Where]] [[ExactWords Nobody Has To Die.]]]]

->''Legends say that those who climb the mountain never return.''
-->-- '''OpeningMonologue'''

''Undertale'' is a RolePlayingGame by Music/TobyFox, released on September 15th, 2015. Its development was the result of a Website/{{Kickstarter}} [[https://www.kickstarter.com/projects/1002143342/undertale campaign]] that raised $51,124. The game and a demo are available at http://undertale.com/ and trailers are [[https://www.youtube.com/watch?v=xUZ_-bKTxZw here]] and [[https://www.youtube.com/watch?v=1Hojv0m3TqA here.]] A port for the UsefulNotes/PlayStation4 and UsefulNotes/PlaystationVita was released on August 14, 2017. A UsefulNotes/NintendoSwitch port is in the works.

It tells the story of a young child who investigates a mountainside cavern and falls down a deep hole, awakening on a bed of flowers in a dark and mysterious place. Now the child must find a way back home, encountering all manner of creatures along the way.

''Undertale'' borrows heavily in atmosphere from ''VideoGame/{{EarthBound}}'' and ''VideoGame/{{Mother 3}}'', and uses combat mechanics similar to BulletHell games, where you must dodge enemy projectiles and protect the heart-shaped avatar representing your SOUL. [[SlidingScaleOfIdealismVersusCynicism The game's story changes significantly]] depending on how you deal with the monsters you encounter: you can fight and kill them to earn EXP and increase your LV, or figure out how to befriend them and show them mercy.

Compare ''VideoGame/{{Iji}}''. Compare and contrast other indie [=RPGs=] with a ''VideoGame/{{Mother}}'' flavor: ''VideoGame/{{Lisa}}'', ''VideoGame/{{OFF}}'', ''VideoGame/{{Oneshot}}'', ''Videogame/{{Ib}}'', ''Videogame/{{Anodyne}}'', ''VideoGame/SpaceFuneral'', and ''VideoGame/{{Middens}}''[[note]]which also has a pacifist option[[/note]]. Contrast ''VideoGame/CitizensOfEarth''.

'''Before reading the tropes section or other sections, please note that by its very nature, ''Undertale'' is [[WalkingSpoiler very difficult to talk about at length without spoiling it.]] Read with care.'''
!!(Seeing all these tropes present in ''Undertale''... it fills you with determination.)

* Undertale/TropesAToG
* Undertale/TropesHToP
* Undertale/TropesQToZ
-> [[TVTropesWillRuinYourLife Don't you have anything better to do?]]