"Honestly, I really wanted to release Ground Zeroes right after [2010's PSP release of] Peace Walker," Kojima said. "Whether on PSP or PS3. But then we had development issues, some delays with Metal Gear Rising as well. And then we learned about next generation coming, so it ended up being the way it is now."
Kojima additionally notes that Ground Zeroes was split off from Metal Gear Solid 5: The Phantom Pain to satisfy fan demand, as The Phantom Pain is still far from completion. "Of course it would be ideal to release Ground Zeroes and the main part of the game all together," Kojima said. "But at the same time given that this week we have the next generation of game consoles coming out, a lot of the fans wanted to play something sooner. And given that the main game is a rather big game and still in development, it will take a little bit more time to get it out. We decided to listen to the fans and put at least the prologue out there so people will get the experience."
Ground Zeroes will be priced at $30 when it premieres this spring for the PlayStation 3, PS4, Xbox 360, and Xbox One. A variety of special edition bundles are planned for retail release in Japan.