I am bias in favor of this game and this line because this book introduced me to roleplaying back in 1987. This system here is what has become known as the Palladium Megaversal System, dirived from first edition AD&D with precentage skill rolls reminecent of RuneQuest and other inovations, like a roll over d20 mechanic, that it would take TSR-Wizards over a decade to innovate on their own.
The best thing about this system is that though it has changed some since 1983, those changes are relatively minute. You can essentially port material from one game or setting into another with little work. My group used to play Robotech with martial arts from Ninjas and Superspises added in.
The scan is excellent, and presents an archival look at scifi-anime gaming and English language anime source material in 1986. One might ask how playable the game is today. My response would be that it depends entirely on the group and the game master. I have yet to play any rpg rules verbatium, and it's doubtful that the founders of the hobby ever intended rules as anything other than a bridge to entertainment. I have never used hit locations or M.D.C. other than Main Body to speed up the game, for instsance.
What makes the 80s-90s line of Robotech RPG books interesting is the degree of latitude Harmony Gold gave Palladium with the licence . In effect, in the 80s and 90s, there were four versions of Robotech that didn't always mesh: Carl Mecek's production for TV and notes for the Sentinels, the novelizations by Jack McKinney, the comics by the Waltrup brothers and Palladium's, which was very much a Cold War version of Robotech influenced by the geo-politcs of the 80s [see the RDF Manual]. This was great! it meant more Robotech. Harmony Gold's current lisencing allows for only the presentation of Tommy Yune's version of Robotech, which, while not at all bad, arguablly restricts the creativity of the RPG authors.
Buy it. Read it. Make it your own.