Ninjas & Superspies

Characters in Ninjas & Superspies may be members of a martial arts dojo, operatives for a government or private intelligence agency, soldiers involved in counter-intelligence, or even private eyes, depending on the selection of Occupational Character Class (O.C.C.). Each O.C.C. provides a base age which is modified by whatever combat training a character has and, in some cases, how long they have spent in prison. Most characters are highly skilled, with characters from the main book using the skill programs system to determine their skills, which provides a collection of related skills, and those from Mystic China using the O.C.C./Elective/Secondary skills method, which allows the selection of skills a la carte. Almost all characters have access to contacts from their backgrounds: martial arts characters may know people from competitions, secret agents may have worked with someone in the past, thief characters may have done time with certain people, etc.

While the game makes use of Palladium's Megaversal system, this game features a combat system that is far more detailed than in other Palladium games, containing more options for attack and defense to go along with the large number of martial arts offered. Instead of the standard four combat forms offered ("Basic", "Expert", "Assassin" and "Martial Arts"), Ninjas & Superspies has more than forty unique styles, with additional styles found in the supplement Mystic China. These are somewhat abstracted from "real" styles of the same names, attempting to maintain the feel of an individual style without necessarily showing every way in which it can be taught. Some martial arts have entirely unique forms of attack or defense, or unique powers, but most draw from the expanded list of standard maneuvers, combining them with martial arts powers to create the individual style.

Ninjas & Superspies also incorporates the idea of Chi, which is presented as a life-energy force which is present in the world and can be directed by trained individuals. This concept has been interpreted several times into other Palladium games, often as different aspects of metaphysical energy.