Almost every part of the game is shown through one continuous camera move as if in one single take, including cut-scenes and gameplay. There is precisely one mandatory cut, when the helicopter leaves at the end of the Camp Omega sequence.
The game was originally conceived as a direct sequel to 2010's PSP release of "Metal Gear Solid: Peace Walker" and was to be released on both the PSP and PS3. This was delayed multiple times due to development issues and other projects. After learning about the upcoming generation of game consoles the PSP version was scrapped and the game ended up the way it is now.
In addition to Big Boss, Kiefer Sutherland also voices Raiden (Jamais Vu mission) and "Classic" Snake (Déjà Vu mission), by use of archive sound samples for Big Boss. When Raiden speaks, his voice sounds mechanical, but it's still possible to tell that is Sutherland's recording. Sutherland also is rumored to voice the Medic in the Chopper at the end of the first mission. If this is true, his recordings are deepened. If you heighten the pitch, it sounds similar Sutherland's voice.
First Metal Gear Solid game in which David Hayter isn't the English language voice for the Snake/Big Boss character. Akio Ôtsuka still provides his voice for the character in the Japanese version.
Ground Zeroes became free to download on the PlayStation 4 as part of the PlayStation Plus program during July 2015, and was free to download on the Xbox One as well during August 2015 as part of the Games with Gold program. Presumably this was because Konami wanted people to play Ground Zeroes before The Phantom Pain's release in September 2015. Ground Zeroes also became free to download on the Xbox 360 during October 2015 with Games with Gold.