From the site:
RIFTS is set in the distant future of our own world. Warfare has ripped the world apart and the nations of today are gone from the Earth. As if this were not enough, massive eruptions of magic washed over the planet and gathered into powerful lines of energy. These "ley lines," as they are called, crisscross the planet to form a huge network of magical energy. Where the ley lines intersect, a powerful nexus may form and tear a hole in the fabric of reality. These holes, or "rifts," can act as portals to other worlds.

The review is split into sections such as Overview, Game Play, and Card Issues.