This open-world design is, of course, a change from the Metal Gear Solid series, which gives players a lot of choice in how they want to approach situations -- in a strictly prescribed series. Do you want to walk by those guards quietly, or tranquilize them, or throw down a Playboy magazine to distract them, or just kill them with a grenade? However you do it, you likely have to.
Kojima didn't outright say the images he recently released on Twitter, of a Fox Engine title, were of this particular game. He has continued teasing the engine on Twitter, where today he posted an image of an "original system" for creating avatars. Above: programmer "Lionel" and his avatar, made in about an hour of fiddling.