So as of today (1/14/2012) Syphon Filter 1, 2 and 3 are available for free to Playstation+ members. I had completely forgotten about this series of games. I remember playing the demo for the original Syphon Filter game and enjoying it as a kid. I think I rented it maybe three or four times, and distinctly remember using a Gameshark to have all of the guns unlocked at the beginning of the game. I decided to download the game today to see if it has held up at all. What I discovered is that the Gameshark code to unlock all weapons was a complete waste of time.