Before revision: The game is fully prepared for both of these options, and, if you perform a "Genocide" route by ignoring Flowey and killing everyone, he assists the player in their mass murder, until Flowey is killed as well
After revision: .The game is fully prepared for both of these options, and, if you perform a "Genocide" route by ignoring Flowey and killing everyone, he assists the player in their mass murder, until Flowey is killed as well