Metal Slug 5 was released for the Sony Playstation 2 in the United States and is categorized within the 2D Platform genre under the 2D Platform classification to help locate the correct item during web searches. The game was added to iOctavio.com on 2005-06-17. The story follows a research installation developing the next-generation of Metal Slugs that is attacked by unknown forces and has a disc containing Metal Slug secrets stolen from it. Players lead Marco, Tarma, Eri and Fio into The Corridor of Fire to recover the secrets and destroy the paramilitary syndicate known as the Ptolemaic Army. The gameplay features side scrolling run and gun action with cooperative multiplayer support for up to four players. The Ptolemaic Army acts as the primary antagonist force throughout the campaign. The title retains the classic Metal Slug mechanics including shooting, jumping, slashing and vehicle usage across varied levels filled with enemies and bosses. The Corridor of Fire serves as the central setting where the majority of the conflict occurs as the team battles through waves of adversaries to retrieve the sensitive disc and neutralize the threat posed by the Ptolemaic Army. The game continues the series tradition with humorous tone, explosive action and detailed pixel art graphics adapted for the Playstation 2 hardware.