Konami issued a press release stating that it has released a free downloadable demo of its biggest title this year, Metal Gear Solid 4: Guns of the Patriots. The demo is now exclusively available on the PlayStation Network Store and gives gamers the chance to taste the latest exploits of Solid Snake.
Metal Gear Solid 4: Guns of the Patriots is the final chapter in the saga of Solid Snake, which sends him around the world in pursuit of his arch nemesis, Liquid Ocelot. Armed with new gadgets and abilities, Solid Snake must shift the tides of war into his favor, using the chaos of the battlefield to infiltrate deep into enemy territory.

In his globetrotting final mission, Snake must sneak deep into enemy locations in the Middle East, South America, and other corners of the earth to foil Liquid Ocelot's plans for total world domination.
GameSpy's review of Metal Gear Solid 4 can be read here.