Metal Slug: 1st Mission

Metal Slug: 1st Mission is a definitive platformer run and gun experience that brought the high-octane action of the iconic franchise to a portable audience. Originally released for the Neo Geo Pocket Color, this title serves as a spin-off entry that successfully adapts the series' signature chaos to a handheld form factor while retaining its core identity. Developed by Ukiyotei and published by SNK, the game debuted on May 27, 1999, establishing a new standard for technical capability on the device.

Genre and Gameplay Mechanics

Positioned firmly within the Shooter, Platformer, and Action genres, the gameplay revolves around fast-paced vertical and horizontal scrolling combat. Players assume the role of a hero tasked with stopping illegal weapon sales and neutralizing threats to global security. The fundamental loop involves blasting through waves of enemy soldiers, rescuing Prisoners of War (POWs) to unlock a diverse arsenal of heavy weaponry, and piloting powerful vehicles.

A key mechanical innovation is the implementation of dynamic routing. The game features over seventeen missions, offering significantly more content than traditional arcade counterparts. Performance dictates your path; rather than a standard game over, being captured or destroyed sends the character to a prison camp or alternate area. This mechanic forces players to navigate different stage layouts and can result in skipping entire levels, encouraging multiple playthroughs to explore all available routes.

Story and Setting

The narrative centers on a critical military operation where high-grade weapons are being illegally sold on the black market. The stakes are elevated by the presence of the SV-000 "METAL SLUG" prototype, a formidable armored tank that becomes a central objective. The hero must use brute force to lay siege to enemy fortresses, rescue hostages, and prevent the advanced technology from falling into villainous hands.

Platform Availability

While the title originally launched on the Neo Geo Pocket Color, it has been made accessible to modern audiences through the NeoGeo Pocket Color Selection Volume 1 compilation on the Nintendo Switch. This re-release allows players to enjoy the game on contemporary hardware with added utility options, including the ability to toggle between a "New Color" mode and a classic black-and-white filter to suit different display preferences.

Notable Features

  • Extensive Campaign Length: The game boasts over seventeen missions, providing a lengthy and rewarding campaign that exceeds the duration of many arcade releases.
  • Branching Paths: Multiple routes and alternate endings are available, with gameplay progression altered based on survival and performance within stages.
  • Iconic Vehicles: Players can command the SV-000 "METAL SLUG" tank and the agile Slug Flyer, engaging in screen-filling battles with fluid animation.
  • Visual Detail: The game utilizes parallax scrolling and detailed sprite work, featuring varied environments such as lush forests with foreground foliage and underground water passages with distinct lighting effects.
  • Weapon Acquisition: Saving POWs is essential for accessing the full range of weapons, driving exploration and combat efficiency.

Who It Appeals To

Metal Slug: 1st Mission appeals directly to fans of classic run-and-gun shooters and veterans of the arcade era who appreciate dense, action-packed levels. It is ideal for players who value replayability through branching mechanics and those interested in the history of portable gaming. The game also serves as an essential title for enthusiasts of the Metal Slug franchise, offering a unique portable interpretation that maintains the series' intense atmosphere and technical flair.