The story selection system of Super Robot Taisen: Original Generation has been removed, replacing it with a branching storyline during certain intervals of the game. Original Generation 2 primarily focuses on one of the two selectable protagonists from the first game. In addition, a total of four new series (three of them past Super Robot Wars games, while one is a manga) appear, adding new characters, mechs, major events from the respective stories of the series and some original creations for this game itself. Coupled along with a redesigned user interface and longer battle animations, Original Generation 2 boasts an even greater amount of gameplay and background to the Original Generation universe.
It has been six months since the end of the Divine Crusaders War and the L5 Campaign. Seeing a greater need to defend the Earth from future extraterrestrial invaders, the Earth Federation Army begins to mass-produce its line of Personal Troopers, as well as introducing new mechs to combat alien threats to humanity, after the Tokyo Manifest announcement. However, remnants of the Divine Crusaders are still at large, and continue to oppose the Federation. Meanwhile, behind the shadows, mysterious beings are at work, eagerly awaiting their chance to strike and subjugate humanity, or perhaps destroy it, as even greater forces, more powerful and menacing than the Aerogaters, begin to slowly appear...
Series included in Super Robot Taisen: Original Generation 2
Banpresto Originals (Not a TV or movie series)
Shin Super Robot Wars
Super Robot Wars Gaiden: Masō Kishin - The Lord of Elemental