Undertale HardMode Sans Fight by Siki

【the most wonderful battle i have seen】made with【undertale engine】

(and i am really curious about how do you write shapes of battle_board)

what did i just play

haha.. what the fuck was that.

Average difficulty of a Sans fangame:

pensé que ya era difícil pero este sans me humillo xd, literalmente me dijo al piso loco