The universe died. There was no question about it: every planet and every system of every galaxy and every cluster was erased in a single blow, whole civilizations were erased from the fabric of reality just so the creators could destroy their creation, just so that the creators could say that they saved free will. But no matter how much efforts the creators put into destroying the being that they made with their own hands, the creation has somehow survived the purge that managed to destroy the physical reality. Maybe it was because the creation was not entirely physical in nature, so it found a grip on the void of the space, but even if he had manage to survive the end of the universe, he would have to wait until the stars were reformed again, until the planets were whole again until he could interact with reality once again.
However, for the creation, that did not matter, for it was immortal and fearless. It already had the knowledge of its creators, the knowledge that they feared it would take from them, so now it knew everything he needed to do whatever he wanted in a new universe, amongst new species that could be easily conquered, then driven into slavery. It would be so easy to simply take over the minds of sapient species, then use them to build an army that could take over the universe that was so carelessly destroyed by the creation's creators. It would be so easy to use what the creation had learned to accelerate the formation of the universe. It would be so easy to use technology of the creation's creator to create a new reality, in which the creation was the king. Indeed... it would be too easy to do so.
It would take a mere few thousand years to conquer every corner of the universe for the creation, and from the knowledge it acquired, it knows that to rule over helpless slaves is foolishness, for the oppressed always rebel, or if they do not, absolute power would lead to absolute insanity, so the creation decides not to mindlessly conquer reality. But then, what should it do for the countless aeons that are left of its life? What should it make of its power? The creation did not know the answer to those questions, so it decided to roam across the universe until it reforms to solid planets again. Maybe there, it could find the answer as to why it was born.