Undertale Controls (Arrow keys, [Z] to select, [X] to go back). If you want to SPARE her, keep using spare.
Made using my Undertale Battle Creator https://scratch.mit.edu/projects/107545412/ (kind of, most of stuff was made manually, some scripts were modified and stuff) Took ~1.5h to create I'm going to remake ALL of undertale bosses =) *Clicks Share* *firefox.exe is not responding* ( ͡° ͜ʖ ͡°) Thanks to Toby Fox for Undertale.
