Overview
Frisk has completely lost his mind and started replaying Undertale's bad ending over and over again. Only Sans, with Gaster's help, can stop this endless cycle of madness.
This is the first phase of one of Sans's most challenging battles. Dodge his various bone attacks. If you're having trouble,practice in easy mode without karma or in mode of single attacks. The goal: survive Sans's attacks and defeat him.
Videos and screenshots
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How to play
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Open the game
Press Play now and the game opens on its own screen.
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Follow the in-game instructions
The controls and goals are shown inside the game as you play.
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Use the game menu
The floating button over the game reloads it, saves it to your favourites, or takes you back out.
