Transformation

In an instant, the familiar world collapsed. Earth and all that lives went through a Game Transformation. Disasters hit all over Earth: material properties change, new types of flora and fauna appear, and electricity is gone. Instead of the old civilization came a Game involving many other worlds.
But not everything goes according to plan for the invaders. Those who attached Earth to the game realm and, in essence, turned it into a new huge dungeon lose the main bonus from the first action in the game. It goes not to the leader of the invaders, but to an ordinary young guy. How will he use it? Who of the incoming players will be an ally, and who—an enemy? And can those bold enough to go against the all-powerful invaders reclaim their lands—and even create their own new world?