Frontier Gate Boost+ from tri-Ace and Konami will be available in Japan on March 14 at a slightly discounted price. You can get Frontier Gate Boost+ which also includes the original game for 3,990 yen ($44) in stores or 3,500 yen ($40) on PlayStation Network. Already have Frontier Gate? You can get an append version which requires the original disc for 2,100 yen ($23).
Frontier Gate, a role playing game where you play as a pioneer who arrives in a foreign continent, was released for PSP in December 2011. Boost+ adds new maps, equipment, a boost mode system, and side stories for the partner characters.