[2] Super Robot Wars Alpha Gaiden includes what was the final appearance of the Masō Kishin "Banpresto Originals" in the Alpha series, and the last appearance of the characters, besides Masaki Andoh and the Cybuster, Shu Shirakawa and the Granzon, and Lune Zoldark and the Valsione until the Masō Kishin universe was revisited, first in the OG Saga update of "The Lord of Elemental" and then in the sequel "Revelation of Evil God."

Additionally, the game features the first appearance of Sanger Zonvolt, who later becomes one of the selectable protagonists of the 2nd Super Robot Wars Alpha.

Shortly after the events of Alpha, the Earth Federation has covered up many of the events in the climactic battle with the antagonist Aerogaters, but the gravity shock wave from the detonation of the Excelion (from Gunbuster) in the Battle of the Solar System's Absolute Defense is rapidly approaching the Earth, and threatens to wipe out the space colonies and the planet.

Faced with a new threat in the form of the Ancestors, the heroes must find a way to return to their time and prevent this alternate, dystopic future from happening.

[3] A limited plastic Cybuster model was also released at various Softmap stores when gamers were able to pre-order at Akihabara, Shinjuku, Osaka, Omiya and Yokohama.