Metal Slug X Campaign Tips and Weapon Pickups Explained

Metal Slug X is arcade run-and-gun at its absolute peak: hand-drawn sprites bursting with personality, screens full of enemy soldiers, tanks, and Martians, and the series' trademark mix of chaos and comedy. SNK released it in arcades in 1999, and the PlayStation port brought the mayhem home. On SchoolBros it runs directly in your browser - no download, no ROM to supply, and no account. One click and you're storming the beach with Marco, Tarma, Eri, or Fio.

How Does Metal Slug X Run in a Browser?

SchoolBros runs the game through EmulatorJS with a PlayStation core compiled to WebAssembly. The emulation executes locally on your device inside the browser sandbox, and the game data is hosted on our servers, loading automatically when the player page opens. For a game built on split-second dodges, that local execution matters: inputs respond instantly, and you can drop a save state right before a boss.

• Platform: EmulatorJS (PlayStation core), browser-based
• Controls: Keyboard (remappable) or USB/Bluetooth gamepad
• Original release: 1999 (SNK, arcade), later ported to PlayStation
• Download required: None - one click and it loads

Weapon Pickup Guide

Rescued POWs and item crates drop weapon icons marked with a letter. Knowing them at a glance is half the battle:

Icon	Weapon	Best used for
H	Heavy Machine Gun	All-purpose crowd control - sprayable in arcs
R	Rocket Launcher	Vehicles and bosses; slight homing on shots
S	Shotgun	Devastating up close - deletes most infantry and light armor
F	Flame Shot	Burning through packed groups of soldiers
L	Laser Gun	Sustained piercing damage on bosses
I	Iron Lizard	Ground-crawling missiles that hunt along the floor
C	Enemy Chaser	Homing rockets - fire and forget
D	Drop Shot	Bouncing mines for awkward angles

Tips for Surviving the Campaign

• Free every POW. The bearded prisoners hand over weapons, bombs, and score items - and every rescue counts toward your end-of-mission tally if you survive without losing a life.
• Use the knife. Standing next to an enemy makes your character melee automatically, killing instantly without spending a single round. Great for conserving special-weapon ammo.
• Hoard grenades for bosses. Your bomb stock refills at each new life and via POW drops. Dumping a full stack of grenades at a boss's weak point ends fights dramatically faster than pistol fire.
• Ride the Slugs - and eject smart. Vehicles like the SV-001 tank soak hits that would otherwise kill you, and their cannon devastates. When a Slug is about to blow, jump out; the eject even grants a moment of invincibility.
• Mind the transformations. Get touched by a mummy's breath in the Egypt-themed mission and you slow to a shuffle until you grab an antidote; eating too much food turns you fat, changing your attacks until you burn it off. Both are survivable - don't panic.
• Save state before bosses. The arcade original ate quarters at every boss. In the browser you can snapshot instead - the modern equivalent of an infinite coin stack, minus the pocket change.

Features of the Browser Version

Save states are stored in your browser's local storage, so you can snapshot before a boss, close the tab, and come back later to the exact same frame - just use the same browser and don't clear site data. Gamepad support is automatic: plug in a USB controller or pair one over Bluetooth and the emulator maps it instantly, which suits Metal Slug's precise jump-and-shoot rhythm perfectly. Keyboard players can remap every button, and the WebAssembly core keeps this sprite-heavy game running smoothly on ordinary laptops and Chromebooks.

Frequently Asked Questions

Do I need to download anything to play Metal Slug X in my browser?

No. Metal Slug X runs through EmulatorJS with a PlayStation core, entirely inside your browser. Click play on the game page and it loads automatically - no installer, no plugin, and no account.

Is Metal Slug X free to play on SchoolBros?

Yes. The browser version is completely free - no sign-up, no subscription, and no coins to feed the machine.

Does Metal Slug X work on a Chromebook?

Yes. The emulator runs in any modern browser with WebAssembly and WebGL support, including Chrome on Chromebooks, plus Edge, Firefox, and Safari on desktop.

Will my Metal Slug X progress be saved?

Yes. Save states are stored in your browser's local storage on your device, so you can snapshot mid-mission and resume later - return in the same browser and don't clear site data.

Can I play Metal Slug X with a controller?

Yes. USB and Bluetooth gamepads are detected automatically by the emulator, and keyboard controls are fully supported and remappable.

The Legacy of Metal Slug X

Metal Slug X occupies an unusual place in arcade history: it's a remix rather than a straight sequel. SNK took 1998's Metal Slug 2 - beloved but notorious for slowdown when the screen filled with sprites - and rebuilt it in 1999 with the performance fixed, enemy placements reshuffled, new weapons like the Iron Lizard, Enemy Chaser, and Drop Shot added, and missions recast at different times of day. The result is widely considered the definitive version of that game and one of the finest run-and-guns ever made. Its hand-drawn animation remains a benchmark; decades later, pixel artists still study how much character SNK's team packed into a single sprite of a fleeing soldier.

If arcade action is your speed, try Doom for the FPS side of the 90s, or go fist-to-fist in Tekken 3 and Street Fighter Collection. For a different flavor of PS1-era intensity there's Resident Evil 2 - or browse the full games library.