Syphon Filter is a video game series published by Sony and developed by Sony Bend (formerly Eidetic), that has appeared on the PlayStation, PlayStation 2, and PlayStation Portable game systems. In the series, Syphon Filter is the name given to the mysterious biological weapon.
http://www.gamespot.com/search/?q=syphon+filterhttp://www.ign.com/search?q=syphon%20filterMy input:
This game for PS1 was THE absolute shit. The first game wasn't so fun, but the second one was VERY fun to play and tbh I completed it many times over. Pretty much all other games after the second one were not as much fun and that release for PSP was really crappy. Basically what I loved most about the whole game, was the shooting. It was clear that Syphon Filter gameplay was focused on the plot, having lots of shooting in mind, that's why they made those awesome body movements.
Character voices were also very fitting, whole story line was amazing, gameplay was very long. I cannot remember of another game with such physics on PS1, it was unique.
They just don't make games this good anymore...