Need a refresher course before you go diving into Metal Gear Solid 4? Of course you do. Here it is.

In tomorrow's update to the PlayStation Store, Konami and Sony will launch the Metal Gear Solid 4 Database, an interactive guide to the storyline of the series thus far. MGS4 spoilers will be blacked out until you turn them on, so don't worry about having any of the game's crazy revelations dropped on you before you're ready.

Oh, and it's free! On PlayStation.Blog, Konami also points out that downloadable content, including a new costume and new in-game iPod track, is now available in the "Extras" section of MGS4's main menu. Also free!

Metal Gear Solid 4 Database On The Way [PlayStation.Blog]

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