Syphon Filter After terrorists steal a top-secret virus, the nation"s top covert agent Gabe Logan is sent to stop them and recover the virus. Guide Logan as he travels through parks, subway tunnels, a museum, and a military compound on his world-saving mission. Along the way, Gabe will face many dangerous enemies, but he can take them out with a quick shot to the head. It"s up to you to save the world from destruction in SYPHON FILTER.