Leave the city.

You have died and gone to the afterlife. Luckily, as part of the afterlife you are granted use of a special artifact, The Crystal Atlas by the Goddess of Creation. Using this powerful tool, and the help of one of the Goddess' archangels, you can design and explore any world you can imagine, even worlds of fiction, and rule over it with the omnipotence and omniscience of a god. So, what are you waiting for? Just place your hand upon the sphere and stake your claim...