The Solid Eye system is a peripheral that clamps onto a PSP and gives a three-dimensional view of the game. The Solid Eye displays slightly different images in each eye to produce a 3D effect. Gamers will be able to play Metal Gear Acid 2 in full 3D and can even watch 3D movies included in the UMD, such as 3D cutscenes from Metal Gear Solid 3, and a 3D version of the trailer for the upcoming Metal Gear Solid 4 for the PlayStation 3.
The peripheral looks really bulky, and we'll have to see for ourselves if it even adds anything to the game. Thankfully, Konami is planning to sell Metal Gear Acid 2, Solid Eye included, for the standard PSP game price of $40, and the entire game will be playable without the Solid Eye attachment.