The Day One Edition includes exclusive in-game items: the "Cardboard Camouflage" outfit for Metal Gear Solid 4 and the "LOVE BOX" outfit for Metal Gear Solid: Peace Walker. In addition, the collection comes with digital books, such as the Screenplay Book and the Master Book for each game, offering a deeper understanding of the story and characters. As an extra bonus, it includes Metal Gear: Ghost Babel, the first title in the series for handheld consoles, as well as Metal Gear Solid: Digital Soundtrack Vol.2, featuring iconic tracks that accompanied Snake's missions. The collection is scheduled for release on August 27, 2026.