From the back:
"Player characters are heroes lost in the throes of the Apocalypse. Equipped with the most advanced robots, power armor, and weapons in the world, they refuse to give up, and fight against overwhelming odds to save some fraction of humanity."
Rifts Chaos Earth is the prequel to the Palladium Rifts RPG. In Chaos Earth, the Rifts are just opening, and the earth is thrown into chaos. Players take on roles as NEMA (Northern Eagle Military Alliance) soldiers and agents fighting to create order in a world flung to pieces.
Rifts Chaos Earth is compatible with Rifts.
Chaos Earth puts the player in the center of the Great Cataclysm - the apocalyptic upheaval that, in the end, creates what we know as Rifts Earth.
Player Characters live through the death throes of human civilization, the reshaping of the very planet, and the birth of Rifts Earth. You bear angry witness to the Earth's fiery rebirth as it goes screaming to become a cauldron of mystic energy, a multi-dimensional doorway to infinite alien worlds and the catalyst for endless possibilities.
One's greatest challenge is not only survival and battling monsters, but keeping one's sanity, goodness and soul.
You - the player - exist in the eye of the hurricane. A maelstrom that, even as you play, is reshaping the entire planet.
You - the hero - are the last bastion of goodness, idealism and life.
You - the protector of the innocent - are all that stands between the helpless masses and the devouring hordes.
You - as one of the last people standing, unwilling to give up, unwilling to die, unwilling to let chaos win - fight with ruthless conviction against every face of evil, from the openly inhuman and monstrous to your fellow man.
You - as gamers - have never experienced anything like it. Absolute chaos, ruthlessness and savagery in a no-holds-barred free-for-all for survival . . . and more.