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Play Metal Slug 4 (Fully Decrypted) Online
Metal Slug 4 (Fully Decrypted)
Play Metal Slug 4 (Fully Decrypted) online. Run and shoot against Amadeus, use the Dual Machine Gun and build timed Metalish scoring rewards.
Browser play
Arcade — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| RetroPad A / B / X / Y | Z / X / A / S |
| L / R | Q / E |
| Insert coin | V |
| START | Enter |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play Metal Slug 4 (Fully Decrypted)
Quick start
- Choose a soldier and learn Shot, Jump and Grenade.
- Clear the opening enemies while keeping a safe landing route.
- Collect an emblem when another group can be defeated within its scoring window.
- Use a vehicle when its firepower improves the approach.
Controls
A is Shot, B Jump and C Grenade. D is the vehicle self-destruct attack in the documented vehicle contexts. Near a usable vehicle, B enters it.
Metal Slug 4 (Fully Decrypted) — About this game
Metal Slug 4 (Fully Decrypted) adds a timed scoring opportunity to its running, shooting and vehicle combat. Collecting a shield-shaped emblem starts the Metalish system’s timer, rewarding a sequence of enemy defeats within its allowance. Nadia and Trevor join Marco and Fio in the campaign against the Amadeus organization, with the Dual Machine Gun adding another weapon option. Rescue and movement decisions still matter during a scoring attempt: an emblem is most useful when the route ahead can be cleared safely, rather than when collecting it forces the soldier into an enemy’s attack.
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 · arcade
- 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.