Solid Snake strikes back in Metal Gear Solid®2: Substance, the expanded edition of Metal Gear Solid®2: Sons of Liberty™ with all-new game modes, hidden characters and storylines. Top-secret weapons technology is being mysteriously transported under cover of an oil tanker to an unknown destination. Armed with an arsenal of new weapons, supplies and stealth manoeuvres, it's up to Snake to infiltrate the transport and keep this deadly weapon of mass destruction from falling into the wrong hands!