G Generation World and the abbreviated G Gen World appear to be related to the SD Gundam series. Almost every SD Gundam game is followed by G (subtitle). The last game, which Namco Bandai recently ported to Wii, was SD Gundam G Generation Wars. SD Gundam G Generation World would be a fitting follow up.
Following the same logic, Next Universe sounds like a follow up to Mobile Suit Gundam: Gundam vs. Gundam Next. This may be stretching a bit, but Triangle Frontier could be a follow up to Macross Ace Frontier. It’s been two years since the last Macross game and Artdink already created the framework on the PSP.