New York: Ace Books, 1963. First Edition. First Printing, a paperback original novel. Octavo; illustrated wrappers; yellow edge-staining; 191pp,  ad leaf. Light tanning to text edges, with some trivial rubbing and a few faint stress creases; Very Good+ or better.
"The human remnants of the intersystem wars play a territory-oriented game designed to maximize births in an almost sterile population." LEVACK 18a.