Super Robot Wars Alpha Gaiden also includes 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. Although many fans suspect this is due to a copyright backlash with Winkysoft, it is stated in an interview with the creator of Super Robot Wars he merely wants to give more plot attention towards the other original characters, considering the previous titles have dealt with the Masō Kishin plots rather extensively. 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.
Gameplay wise, Alpha Gaiden is the first Super Robot Wars game where all the weapons of a unit are upgraded simultaneously, this would later go on to be used in almost every game made after Alpha Gaiden, save for the Original Generation games. Alpha Gaiden also introduces the Support ability for Attack and Defense, allowing units situated beside one another to attack after each other, or take an oncoming attacking. This ability would also go on to be used in almost every subsequent game.
This was only released in Japan. This game has been patched to English. Original Japanese audio is intact. Game is a strategy turn based RPG