Syphon Filter

Syphon Filter casts you as special agent Gabe Logan, hunting down a biological weapon called Syphon Filter while third-person cover, silenced weapons and gadgets like a taser and night-vision goggles bring stealth into what still plays largely as an action shooter. Its cinematic mission structure and grounded espionage tone, closer to a spy thriller than the sci-fi shooters common at the time, helped it stand out as one of the PlayStation's defining action franchises.