Metal Gear Solid 2: Substance for Sony PlayStation 2 (PS2)
Metal Gear Solid 2: Substance is an enhanced version of the PlayStation 2's Metal Gear Solid 2: Sons of Liberty. In addition to advancing through the entire storyline found in 2001's blockbuster game, players are able to take Solid Snake through five completely new scenarios in a standalone mode called Snake Tales.
Other additions include over 200 VR (virtual reality) missions structured in a similar manner to 1999's Metal Gear Solid: VR Missions, and over 100 stages of alternative missions in which players elude guards and perform other covert tasks as quickly as possible. Playable characters now include Solid Snake, Raiden, Pliskin, and Grey Fox.