Super Robot Taisen: Original Generation 2

Super Robot Taisen: Original Generation 2 (スーパーロボット大戦ORIGINAL GENERATION2, Sūpā Robotto Taisen Orijinaru Jenerēshon Tsū) is a tactical role-playing game for the Game Boy Advance. It is the second Super Robot Taisen game that was officially released in North America.
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.
On June 27, 2007 Super Robot Wars: Original Generations, an enhanced remake of both Original Generation games, was released in Japan for the PlayStation 2.