At Electronic Entertainment Expo 2010, Konami displayed a technical demo for the Nintendo 3DS entitled Metal Gear Solid 3D: Snake Eater – The Naked Sample. The demo's subtitle "The Naked Sample" was meant to convey its purpose as just a sample of the 3DS hardware, with no plans to bring a game into production at that point. Series producer Hideo Kojima stated at the time that if a Metal Gear game for the 3DS was actually made they would consider some elements from the PlayStation Portable title Metal Gear Solid: Peace Walker, including the game's cooperative gameplay system. Later in 2010, Konami announced a full Metal Gear title for release on the 3DS, which was revealed at Nintendo World 2011 to be Metal Gear Solid: Snake Eater 3D. It was released on February 21, 2012, in North America and March 8, 2012, worldwide.