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Play Metal Slug: 1st Mission (World edition · English / Japanese) Online
Metal Slug - 1st Mission
Play Metal Slug: 1st Mission online. A handheld run-and-gun adventure built around branching missions.
Browser play

Neo Geo Pocket — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| A / B | X / Z |
| OPTION | Enter |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play Metal Slug: 1st Mission
Quick start
Begin a new mission and learn the first ground section before rushing ahead. Shoot from a safe distance, jump over obstacles and collect supplies after clearing nearby enemies.
Controls
Stick: move, crouch and aim. A: fire. B: jump on foot. Tap OPTION: switch between gun and grenades. Hold OPTION: pause.
Metal Slug: 1st Mission — About this game
Metal Slug: 1st Mission — A handheld run-and-gun adventure built around branching missions. Fight on foot, rescue prisoners and take control of the Metal Slug tank or Slug Flyer when the route calls for them. Shooting and jumping solve different threats, while the weapon switch lets you alternate gunfire and grenades.
Metal Slug: 1st Mission Game manuals
Cheats
No cheats have been added for this edition.
Player verification and sources
Browser play was reviewed before this edition was published in the catalogue. The date below is the catalogue publication date, not the game’s original release date.
- Browser test and catalogue publication date
- Browsers and devices
- PC: Chrome, Edge and Firefox. Mobile: Chrome on Android and Safari on iPhone and iPad.
- Player engine and core
- EmulatorJS 4.3.0-pre · ngp
- Tested by
- rwEmulator
Sources and editorial basis
rwEmulator reviews edition metadata, release information, game manuals and first-hand browser-play notes. Available manuals are linked below; the editorial policy explains how facts are checked and corrections are handled.