From publisher blurb:
Between the arms of the Milky Way galaxy, in a tiny mist of stars, a double sun shines. Circling this double sun, a gas giant with 27 moons is the haven for a small group of humans. Kidnapped during the Neolithic and subjected to genetic experiments, these humans have been altered into four races. Their kidnappers, the Archon, were destroyed 10,000 years ago by another star faring race.
Freed of the torture of experimentation, the humans quickly spread and inhabited at least five moons of the gas giant they called Kerogo, the Silent Lord. Using left over Archon technology they soon established a thriving civilization. They used the technology but never understood it. The overtaxed research outposts, the humans used for cities, started failing and turned into deathtraps. An Age of War followed and destroyed this branch of the human race leaving the remaining human races as savages who roamed the untamed jungles of Zardoon: Moon of Mysteries. Human and alien civilizations have risen and fallen uncounted times during the last 10 millennia.
Planets of Peril uses a die type rolled against an opposing die type. The higher number rolled wins the action. There is no back and forth dueling in combat. Odds are a more experienced combatant will strike more often and with more lethal blows.