Metal Gear Solid 2: Substance, for Sony Playstation 2 (PS2), is a stealth action-adventure game with elements of espionage. This game further expands upon the story and gameplay mechanics introduced in Metal Gear Solid 2: Sons of Liberty. Substance adds more than just the same game with a few extras. It includes an all-new mode called Snake Tales, which features five standalone stories with Snake as the protagonist. There are also hundreds of individual VR Missions and Alternative Missions, as well as a boss survival mode. Rich with narrative layers, expert stealth gameplay, and tactical depth, it's a must-have for action-adventure fans.