I think there's a story to tell here... Starting with Taito's going completely bonkers with the conspiracy-theory title, which makes this game the legitimate precursor of Hideo Kojima's MGS2 Sons of liberty.
I mean... You have the "Space Invaders" brand and you come up with "Majestic Twelve - The Space Invaders Part IV"... Really? And you pepper it with with an arcade flyer proudly boasting "Kennedy would be mortified!"... Words can't begin to describe how delightfully insane is that. Japanese humour at its best. So they're doing the revamp of the iconic flying saucer game, and they up the ante poking fun at UFO conspiracies and cattle abductions. How awesome is that?
Well apparently a little too much, and in fact the game was quickly rebranded with a more safe "Super Space Invaders '91" title. Was this a conversion kit or what? It isn't immediately clear. The game was out in Japan in November so it's entirely possible that changing to a more recognizable title for the new year's world release was planned from the beginning.
What's clear instead is that the world board makes several gameplay changes: stripped out of level select, it becomes a longer affair, and presents just a single ending instead of two like the Japanese rev.
MJ-12 was the first foray into gaming modernity for the SI franchise, featuring for the first time in the series not only branching paths and simultaneous 2p action, but also stage bosses. It is not the first SI featuring powerups however. If the arcade game chronology serves me right, in fact:
-March 1990: Space Invaders Fukkatsu no Hi (HuCard)
-September 1990: Space Invaders '90 (Sega Megadrive)
The MJ-12 coin-op (11/90) comes only third in this "nineties facelift" collective operation, something that seems often overlooked.
MJ-12, by now "SSI '91" was also a turning point in ports policy, as Taito seemingly lost interesting to develop ports in-house. Instead, it would be the british Domark to secure rights for home computer versions abroad, which would discard the year indication in the title, and becomes just "Super Space Invaders". Although Domark is a name that often sends a shiver to our spines, their developers (Kremlin) must have felt the pressure to work on such an historic franchise and produced at least a couple of valiant efforts, all considered. They must have also grasped the tongue in cheek nature of the game, because they came up with some quite british intro and endings that must be read to be believed...
