When dungeons started appearing all over the world, in what Alexis Dmitry calls the Second Irruption, it did not take long for humans to begin invading them. At the time, for humans, Dungeons were just nests of creepy monsters, but soon they stopped being seen so simply and became a kind of the second world, where anyone could start a second life.
As the generations went by, the Genes' abilities became more powerful and the Panspermia Weapons. All the progress that could typically be discovered with the advance of chemistry, biology, mathematics, and other intelligence fields became even slower than it should have been. Wars were fought, genocides happened, and humanity had been completely transformed in just a few hundred years. Now people could fly, while others could sweep a village off the map with just one hand.
The Genes Abilities took human life to a level beyond anything imagined.