This campaign is currently in very early planning stages.
In some ways, it will resemble an E6 D&D game. Characters are only able to achieve levels beyond 6 by entering into an ages-long rest that matures their souls and allows the world of Donetria itself to grow.
Over the course of the game, the player characters will enter into a number of such rests. Each will progress time to a new epoch; each of these periods will bring a distinct tone to the setting. Within the world, this concept will have many names, but for the purposes of this wiki, I will refer to it as the Sleep of Heroes.