by the original material. Return of the Masters, set in Asia, features a system of gladiatorial mecha martial arts combat called Mecha Su-Dai. Lancer's Rockers concerns a network of travelling performers following in the footsteps of New Generation rock star Lancer/Yellow Dancer, carrying protoculture-powered musical instruments that double as powerful weapons (reminiscent of, but unrelated to, similar developments in the Macross sequel Macross 7). The Sentinels RPG also diverged in some respects from the story covered in the Sentinels novels and comic books, having been developed independently based on the same incomplete source material provided by Harmony Gold. The two primary differences are the idea that the SDF-3 left with an entire fleet of REF ships accompanying them, and that the REF and the Sentinels joined in a protracted war against the Invid Regent. The game also suggested that members of the Sentinels' races would openly join the REF. Game system The Robotech RPG used a modified version of the rule system used in the Palladium Fantasy Role-Playing Game introduced several years earlier. Clearly patterned after Dungeons & Dragons, the Palladium Fantasy RPG used a very similar rule system based around physical and mental statistics generated by rolling 3D6 (three six-sided dice), and the use of a D20 (20-sided die) in combat. Percentile dice (two ten-sided dice, one read as a tens column and the other as a ones column) are used for skill resolution. The Robotech RPG introduced the concept of mega-damage—"super" hit-points that are equivalent to 100 ordinary-person hit points—to simulate the toughness of the heavily armored mecha. This concept would become widely used in Palladium's Rifts game. Inaccuracies The creators of the Robotech RPG originally lacked access to the complete source material, working against deadlines based on what could be seen from show footage and limited-scope translations. As a result of incomplete availability, compounded by animation and dubbing errors, some descriptions of mecha and weapon systems given in the First-Edition books are inconsistent with either the animation or subsequently uncovered source material. The confusion is particularly strong in Southern Cross, where the many humanoid robots, battloids, and suits of armor are often confused for one another. These inaccuracies are genuine errors and distinct from creative choices that Palladium writers made to elaborate on the Robotech storyline as discussed previously. Cancellation Contractual issues in the wake of Harmony Gold's aborted Robotech 3000 project, as well as a general