On genocide and pacifist is still normal.
But there’s one thing that different
There’s a extra battle with THE_CREATOR, the one who make it happens, the one who steals the soul. You can’t spare THE_CREATOR, genocide or pacifist.. you need to defeat him... well for fair, THE_CREATOR will broke the mercy button. Than when he has been defeated, here another differences. On pacifist, everything back to normal, you life happily with everyone, the AUs and timelines has back to their place where they should. On Genocide, every thing back to normal, but you kill everyone... you meet DE__TERMINATION (Help_Them Chara) there’s only two option... Reset or END.... END means you end your self for nothing..
Reset means.. well yeah.. Reset