Syphon Filter 2 - IGN

The sequel follows the footsteps of the original, with several minor improvements, a few large additions, and a brand new story starring Gabriel Logan and his accomplice, Lian Xing.

Syphon Filter: One of the best action games on PSone. : r/retrogaming

Syphon Filter: Dark Mirror - IGN

Syphon Filter: The Omega Strain - IGN

Syphon Filter - IGN

Syphon Filter Review - IGN

Syphon Filter: Dark Mirror - IGN

Syphon Filter 3 - Wikipedia

Syphon Filter 2 - IGN

Syphon Filter: Logan's Shadow - IGN