Metal Slug 4 & 5 - PlayStation 2
- Genre: Action
- ESRB: T
- Publisher: SNK NEOGEO
- Developer: SNK NEOGEO
In Metal Slug 4, a cyber-terrorist group has unleashed an international computer virus with the goal of hijacking the world's militaries. Join Marco, Fio, and new Metal Slug team members, Trevor and Nadia, as they try to stop the distribution of the virus before it's too late. A disc containing Metal Slug secrets has been stolen in Metal Slug 5, after a research installation is attacked by unknown forces. Marco, Tarma, Eri and Fio must enter "The Corridor of Fire" to recover the secrets and destroy the paramilitary syndicate known as the Ptolemaic Army.