If you cannot access the official patch or prefer a different experience, consider these options:
You might be wondering, “Is it worth updating if my base game works fine?” The answer is a resounding yes, especially for version 1.0.3.
| Action | Default Mapping | |------------|----------------------| | Shoot | Y / A (or tap screen) | | Jump | B | | Grenade | X / R | | Special (Heavy attack) | L (or ZL in single-JoyCon) | | Rewind | ZL + ZR (or - button) | | Rapid Fire ON/OFF | Hold R + L (toggle) |
METAL SLUG 3 Switch NSP UPDATE Game: A Retro Action-Packed Adventure
Get ready to relive the nostalgia of classic run-and-gun action games with the METAL SLUG 3 Switch NSP UPDATE Game! This iconic side-scroller has been a staple of the gaming world since its initial release in 2002, and now it's available on the Nintendo Switch, updated with new features and gameplay.
What is METAL SLUG 3?
METAL SLUG 3 is the third installment in the METAL SLUG series, developed by SNK. The game takes place in a fictional world where players take on the roles of Marco, Fio, or other playable characters, as they battle against an evil organization known as the " Rebel Army". With its signature blend of action, humor, and challenge, METAL SLUG 3 has become a beloved classic among gamers.
Key Features of METAL SLUG 3 Switch NSP UPDATE Game
The METAL SLUG 3 Switch NSP UPDATE Game offers a range of exciting features, including:
What's New in the NSP UPDATE?
The NSP UPDATE of METAL SLUG 3 brings several new features and improvements, including:
Why You Should Play METAL SLUG 3 Switch NSP UPDATE Game
METAL SLUG 3 Switch NSP UPDATE Game is a must-play for:
Conclusion
The METAL SLUG 3 Switch NSP UPDATE Game is a fantastic addition to any gaming library. With its updated features, classic gameplay, and nostalgic charm, it's a must-play for gamers of all ages. Whether you're a retro gaming fan, an action game enthusiast, or a casual player, METAL SLUG 3 is sure to provide hours of entertainment and excitement. METAL SLUG 3 Switch NSP UPDATE Game
Download METAL SLUG 3 Switch NSP UPDATE Game Now!
Get ready to experience the ultimate retro action-adventure game on your Nintendo Switch. Download METAL SLUG 3 Switch NSP UPDATE Game now and join the battle against the Rebel Army!
This update aims to restore arcade-like responsiveness and reduce interruptions—especially valuable for speedrunners and completionists. Keep backups of your original NSP and saves before applying updates.
If you want, I can produce a step-by-step illustrated guide for installing NSPs on Switch or a brief summary tailored for non-homebrew/legal update methods.
Bringing the Arcade Home: Metal Slug 3 on Nintendo Switch Metal Slug 3
, the iconic run-and-gun masterpiece from SNK, remains a staple for action fans on the Nintendo Switch. Released as part of the ACA NEOGEO
, this version provides a faithful reproduction of the original 2000 arcade experience with modern quality-of-life updates Classic Gameplay with Modern Polish Metal Slug 3
, players control elite veterans Marco, Tarma, Eri, or Fio as they battle General Morden’s forces and even extraterrestrial threats. This entry is famous for introducing a branching path system
, allowing players to choose different routes within missions—each offering unique obstacles and vehicles like the Drill Slug or Elephant Slug. Update Features & Performance
The Switch version includes several features designed to bridge the gap between retro charm and modern convenience: Customizable Settings
: Players can adjust the difficulty level, button mappings, and even toggle "Blood Display" on or off. Visual Consistency
: The "ACA NEOGEO" engine allows you to replicate the atmosphere of classic arcade displays, including scanline filters. Online Competition
: While primarily a local experience, you can compete against players globally through online high score rankings Multiplayer Modes
: The game supports 2-player local co-op. Note that playing with a single Joy-Con each must be configured in the Switch home menu rather than the in-game settings. Technical Specifications Metal Slug 3 (Switch) Review - Nintendo World Report If you cannot access the official patch or
The story of Metal Slug 3 begins several years after the defeat of General Morden. While order has supposedly returned to the world, the Metal Slug Wiki notes that the Peregrine Falcon Strike Force (Marco and Tarma) and the intelligence agency S.P.A.R.R.O.W.S. (Eri and Fio) discover that Morden’s forces have not disbanded but are instead hiding and building new strongholds. The Rising Threat
The team is dispatched to investigate a series of strange phenomena, including mutated wildlife (like giant crabs) and reports of livestock abductions. These bizarre events, described by TV Tropes, suggest that the Mars People—the alien race that previously allied with Morden—have returned to Earth with a more sinister agenda. The Great Betrayal
During the final mission, the heroes launch a full-scale assault on what they believe is Morden’s headquarters. After a fierce battle with Morden in his "Hi-Do" helicopter, a shocking twist occurs:
The Fake Morden: The Morden you just defeated is revealed to be a Mars Person in disguise.
The Abduction: The real General Morden is shown chained to an alien vessel, and the aliens promptly abduct the player character (Marco, Tarma, Eri, or Fio) into outer space. The Final Showdown
In an unprecedented move, the Regular Army and Morden’s Rebel Army form a temporary alliance to rescue their captured comrades. They launch an armada of rockets into space to infiltrate the alien mothership, the Rugname.
Inside the ship, the remaining heroes battle armies of clones created from the abducted character.
After freeing the original character and General Morden, the team escapes the collapsing mothership.
The final battle takes place during a free-fall back to Earth against the alien leader, Rootmars, a massive brain-like creature. The Ending
Once Rootmars is defeated and plunges into the ocean, the heroes land safely. As the Rebel Army retreats in captured UFOs, one of the protagonists throws their gun into the sea, signifying a hope for peace. However, a post-credits scene shows the gun hitting a "fishman" deep underwater, hinting that the world's bizarre troubles are far from over. To see the story and all its branching paths in action:
In the cramped, humming server room of a retro gaming archive, Elara found it: a dusty, unmarked SD card labeled “METAL SLUG 3 Switch NSP UPDATE Game – DO NOT DEPLOY.”
Her fingers itched. She’d been hunting this for two years—a phantom patch that dataminers swore would add a secret final mission to the cult-classic Switch port. Ignoring the warning, she slotted the card into her hacked console.
The update installed in three seconds. Then the screen went black.
When it flickered back, the Switch menu had warped. The Metal Slug 3 icon now breathed: a pixel-art skull blinking once. Elara pressed A. You might be wondering, “Is it worth updating
She didn’t land in the usual POW camp. Instead, she stood—as Marco—in a glitched-out neon swamp. The UI read: “UPDATE 1.3 – ETERNAL MISSION. NO CONTINUES. ONE LIFE.”
A countdown appeared: 00:03:00:00.
Then the first wave hit. Not rebels or aliens, but corrupted sprites—jagged, screaming fragments of other cancelled games. A pixel-dragon from a lost Neo Geo title lunged. Elara fired, her thumbs slamming buttons. Each kill spat out lines of C++ code that dissolved into the air.
Three hours later, her Switch was warm enough to warp plastic. She’d reached the “end”: a door labeled ROLLBACK. Beyond it, the normal title screen pulsed weakly, like a heart in recovery.
Panting, she realized: the “Update” wasn’t a new level. It was a self-repairing patch sent from a future where Metal Slug 3 had been corrupted into a ransomware virus. And she was the first playtester in a war that hadn’t started yet.
She hit ROLLBACK.
The console clicked. The SD card ejected itself—melted, silent, dead.
But on her home screen, the Metal Slug 3 icon now had one small addition: a golden star in the corner, and below it, text that only she could see:
“PLAYER 1 – THANK YOU FOR THE UPDATE.”
Here’s a ready-to-post announcement for METAL SLUG 3 on Nintendo Switch, including the update (NSP) info.
You can use this on forums, Discord, Telegram, or gaming blogs.
| vs PS4/Xbox One | No online co-op, but has rewind & touch controls. | | vs PC | No mod support, but portable & quick resume. | | vs Neo Geo / AES | No loading, rewind, save states, and widescreen. |
Few franchises command the same level of respect in the run-and-gun genre as METAL SLUG. Since its arcade debut in the late 90s, the series has become synonymous with hand-drawn pixel art, over-the-top explosions, and punishing difficulty. Among the seven mainline entries, METAL SLUG 3 is widely regarded as the zenith—a game that perfected the formula with branching paths, zombie transformations, and a colossal alien final boss.
When SNK ported this masterpiece to the Nintendo Switch, fans rejoiced. However, like any digital title, the game has received several post-launch patches. If you’ve been searching for the METAL SLUG 3 Switch NSP Update Game, you are likely looking for one of three things:
This article covers all of that and more. We will break down what the latest update actually does, how it affects emulation and backported consoles, and whether the update is essential for the modern player.