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Game Soundtrack

Five days before the seventh human falls, the Underground breaks.
The Determination Project collapses. Doctor Gaster is gone. The Underground hangs by a thread.
And the skeletonwho once told bad jokes at Grillby’s?
He is not him anymore. Not really.
Traverse a world falling apart at the seams. Wander through the forgotten paths and sealed labs. Lend a hand to monsters just trying to make it through another day. Piece together fragments of a failed experiment and find out what really happened in the Core.
Some stories ask how to save the world.
This one asks whether a single person can still be saved.
Features
An original story inspired by Undertale, Deltarune, and the Undertale: Insanity AU.
A dark, grounded interpretation of Insanity!Sans and the cost of Determination experiments.
Survival mechanics: hunger and hydration shape your journey through the Underground
Hidden documents, side quests and original boss encounters
One complete, story-driven ending
Freedom is never free.
Someone always pays the price.
Credits (incomplete)
Created with love for the worlds of Undertale, Deltarune (by Toby Fox), and the community that kept them alive.
Undertale: Insanity: by UTF
Programming: @GoldenAurice ![]()
Mild Cartoon Violence
Mild Fantasy Violence
Animated Bloodshed
Drug Reference
Mild Language
Comical Shenanigans
