Syphon Filter (series)
（重定向自Siphon Filter）
Syphon Filter is a third-person shooter stealth video game series developed by SCE Bend Studio (formerly Eidetic) and published by Sony Computer Entertainment (previously 989 Studios), 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.