Because the gods abused their power, time and space were confused and the world collapsed. The last gods had to create "Noah's Ark" to save themselves.
The gods created a screening system outside of time called the "God-making Game". This system will absorb the souls of people who died in vain in all the worlds, and filter out the true souls of the gods through each level.
The energy emitted after the bodies of the gods collapsed caused changes in parallel time and space in countless worlds, so the task of the level is usually to solve the changes. And because the human race has the largest number of believers in gods, the last gods have chosen the human race to reincarnate. Only when the original gods are fully awakened will the "god-making game" end.
Intention: Facing difficulties calmly