Quite a rare demo but not as rare as the trade demo ( which was not released to the public at large ). Released in America in 1998. This one still is factory sealed and in mint conditon.

From http://playstationdemos.vgrebirth.org :

"Free with pre-purchase of Metal Gear Solid at KB Toys and also included free in specially marked packages with the purchase of Interact's Piranha Pad at EB in 10/98."