Undertale's Mercy Button Secret: Why Your SAVE File is a Lie

** Curiosity about old Undertale tricks is surging again as speedrun clips highlight secret paths.

** Undertale's Mercy Button Secret: Why Your SAVE File is a Lie is a hidden flag in memory. Undertale's Mercy Button Secret is evidence your save is faking neutrality. Studies indicate choices you believe in may already be predetermined by early mercy use.

** This flag flips when you spare bosses early in the run. Mercy conditions later encounters, locking peaceful routes before you realize. Research shows timing of sparing shapes which scenes trigger.

** Fighting resets the hidden flag, clearing prior mercy actions. Precision here reshapes routes, showing mercy is more than compassion.

** What does this mean for my save files? Your save shows mercy outcomes because early choices already mark routes.

Why should I care about hidden flags? Understanding flags helps plan neutral routes and reset conditions for different endings.