The Book of Mars: A Combat System 1981

A futuristic setting where micro-scaled, platoon level wars are staged for prizes such as technology, territory, or shipments of goods. These "Blood Games" are presided over by a World Court that establishes the rules and prepares the combatants for battle before air-dropping them onto a secure island battlefield.

The rules contain descriptions, statistics, and other detailed information for a wide variety of weapons from sticks and stones to tactical nuclear weapons. After consulting charts for line of sight, weapon statistics, infantry statistics, movement factors, target size, and environmental factors, players roll percentile dice each attack round to determine hits. For successful attacks, players then consult charts to determine weapon penetration and then apply location-specific damage to the enemy.