For those tracking the latest for Metal Slug Attack Reloaded
on Nintendo Switch, the game recently received a major free content update that significantly expands the roster and gameplay. As of April 2026, the game is also confirmed to be fully compatible with Nintendo Switch 2 株式会社SNK Latest Update Highlights (v1.1.0+)
The most recent major expansion added a wealth of content to the base game: 20 New Units:
The roster now exceeds 320 characters, featuring the brand-new Reika for Liberty and fan-favorites like Christmas Midori Everlasting Summer Abigail New Stages & Scenarios: High-difficulty Everlasting Summer
campaign scenarios have been added to the "Another Story" mode. Quality of Life Improvements: Batch Evolution: Evolve multiple units at once to save time. Post-Battle Skip: Faster progression through repetitive farming. Streamlined Leveling:
Simplified unit acquisition and leveling mechanics to reduce the late-game grind. 株式会社SNK Key Game Info
$9.99 (one-time purchase, no mobile-style microtransactions). Approximately on Switch. Multiplayer: Requires a Nintendo Switch Online membership for world-wide online battles. Nintendojo If you are looking for the latest or update files, they are available through the official Nintendo eShop
Are you focusing on building a specific faction deck, or are you just getting started with the new units?
For fans of the classic run-and-gun series, Metal Slug Attack Reloaded on the Nintendo Switch has revitalised the beloved mobile tower defense title as a fully-featured, offline console experience. Since its surprise launch in June 2024, the game has received significant post-launch support, most notably a major free content update that arrived on November 27, 2024.
This update provides a wealth of new content, including 20 additional units and streamlined progression mechanics, making it the perfect time for players to ensure their NSP files (Nintendo Submission Package) are fully updated to the latest version. What’s New in the Metal Slug Attack Reloaded Update?
The latest update for Metal Slug Attack Reloaded significantly expands the roster and refines the gameplay loop. 1. 20 New Playable Units
The highlight of the update is the introduction of 20 new units, bringing the total roster to over 320 characters. metal slug attack reloaded switch nsp update new
Reika for Liberty: A brand-new, powerful unit making her debut in the Reloaded series.
Fan Favourites: Several units previously exclusive to the mobile version’s timed events have joined the permanent roster, including Christmas Midori, Everlasting Summer Abigail, and Everlasting Summer Dragunov.
Seasonal Variants: New holiday-themed and summer-themed units across various factions like the Regular Army, Rebel Army, and Space Army. 2. Enhanced Campaigns and Scenarios
Along with the new units, players can now experience updated Everlasting Summer and Christmas campaign scenarios. These updates include:
High-Resolution Portraits: New, crisp character art for the added units.
New Quests and Avatars: Fresh objectives to complete and customisation options for your player profile. 3. Critical Quality-of-Life (QoL) Improvements
SNK has focused on making the game less "grindy" by implementing features that respect the player's time:
Batch Evolution: Evolve multiple units simultaneously rather than one by one.
Post-Battle Skip: Skip through victory screens faster to get back into the action.
Streamlined Leveling: Improvements to how units are acquired and powered up, ensuring a smoother transition through the game's difficult later stages. Key Game Features & Tech Specs
If you are new to the Reloaded version, it differs significantly from the defunct mobile original: 【ENG】METAL SLUG ATTACK RELOADED｜Update Trailer For those tracking the latest for Metal Slug
As of April 2026, Metal Slug Attack Reloaded for the Nintendo Switch has received a significant content update that expands the roster and adds new campaign scenarios. Initially released in June 2024, the game is a revamped, offline version of the defunct mobile title, featuring over 300 characters and tower defense gameplay. Recent Update Highlights
The most recent major free update (released in late 2024 and maintained into 2026) includes:
New Roster Additions: 20 additional units have been added to the game, including the brand-new "Reika for Liberty" and returning fan favorites like "Christmas Midori" and "Everlasting Summer Abigail".
New Scenarios: The update introduced "Another Story" SP scenarios, specifically the "Christmas" and "Everlasting Summer" campaigns with increased difficulty levels. Quality of Life Improvements:
Batch Evolution: A new option to evolve multiple units at once to speed up progression.
Post-Battle Skip: Features added to streamline grinding by allowing players to skip certain post-battle sequences.
Acquisition & Leveling: Streamlined mechanics for acquiring and leveling up units to reduce the repetitive grind noted in early reviews.
Visual Enhancements: High-resolution character portraits and new avatars/quests were added to the Nintendo Switch eShop version. Product Overview Official Name: METAL SLUG ATTACK RELOADED Genre: Strategy / Tower Defense File Size: Approximately 1.7 GB Pricing: Usually $9.99 USD on the Nintendo Store. Key Modes:
Another Story: A lengthy sequel story for fans of the franchise.
Gallery Mode: Allows viewing high-quality art and listening to classic series music.
Online Battle: Includes "Room Battle" for friends and "Matching Battle" for worldwide competition. Why You Should Install the v1
For the latest technical patches or to verify specific NSP file versions, you can check the SNK Corporation Official Press Page or community forums like Reddit's Metal Slug Attack community for user-verified version numbers.
Based on your search term, you are likely looking for a guide on how to update the Nintendo Switch version of Metal Slug Attack (often referred to as Metal Slug Attack Reloaded in custom firmware circles, or simply the base game with DLC) to the latest version using the NSP file format.
⚠️ Disclaimer: This guide is for educational purposes only. Downloading or distributing copyrighted NSP files (game files or updates) that you do not own is illegal and violates the terms of service of Nintendo and SNK. I do not provide links to copyrighted files. Ensure you own a legal copy of the game before proceeding.
Here is a technical guide on how update NSP files work on the Nintendo Switch.
If you are still playing the base v1.0.0 NSP, you are missing critical fixes. Here is the community consensus from GBAtemp and other forums:
In the landscape of modern gaming, the line between a live-service mobile title and a premium console experience has become increasingly blurred. Metal Slug Attack: Reloaded, a port of the long-running tower defense and strategy spinoff of the legendary run-and-gun series, attempts to bridge this gap. Released on the Nintendo Switch, it strips away aggressive free-to-play mechanics in favor of a one-time purchase. However, like many digital titles, its lifecycle depends on post-launch support. The recent release of a new NSP update for Metal Slug Attack: Reloaded—widely discussed within console modification and preservation communities—is not merely a routine patch. This essay argues that this update represents a critical juncture for the game, addressing deep-seated technical flaws, rebalancing an inherently grindy economy, and raising important questions about digital ownership and game preservation on the Switch platform.
First and foremost, the primary functional purpose of any software update is to rectify technical instability. The initial launch of Metal Slug Attack: Reloaded on Switch was met with a mixed reception due to performance issues. Players reported significant frame rate drops during high-intensity moments, particularly when multiple enemy units spawned alongside the player’s own offensive “Support” characters. The new NSP update directly targets this problem. By optimizing memory allocation and reducing the processing overhead of particle effects—hallmarks of the Metal Slug visual style—the update aims to lock the frame rate at a stable 60 frames per second in handheld mode and a consistent 30 FPS while docked. Furthermore, the patch addresses a persistent crash bug that occurred during the “P.O.W. Rescue” missions. From a technical writing perspective, this update is a foundational fix; it transforms the game from a stuttering approximation of its mobile predecessor into a genuinely smooth arcade-strategy hybrid, thus respecting the Switch’s aging but capable Tegra X1 hardware.
Beyond raw performance, the update fundamentally re-engineers the game’s progression economy. The original Metal Slug Attack mobile version was notorious for its “gacha” mechanics—randomized loot boxes that encouraged microtransactions. While Reloaded removed real-money purchases, it retained a slow, grinding curve that frustrated many players. The new NSP patch introduces a rebalanced “Medal and AP economy.” Specifically, the update increases the post-battle medal payout by roughly 40% and significantly reduces the “deployment cost” of higher-tier units like the Dragon Nosuke and Golden Claw Unit. This is a deliberate design pivot. It acknowledges that a premium console audience lacks the patience for mobile-style time gates. By accelerating unit acquisition and upgrading, the update allows players to engage with the game’s strategic depth—countering enemy types with specific unit abilities—rather than its repetitive grind. This rebalance effectively redefines the title’s genre: it moves Metal Slug Attack closer to a traditional tactical RPG and further away from its predatory mobile origins.
However, the most contentious aspect of the new NSP update lies not in its content, but in its distribution and the discourse surrounding “NSP” files. In the Nintendo Switch homebrew community, “NSP” refers to a package format that can be installed via custom firmware, often bypassing official eShop checks. Consequently, discussions of a new Metal Slug Attack: Reloaded “NSP update” operate in a gray area. On one hand, legitimate users benefit from the patch as a free download via Nintendo’s servers. On the other hand, the availability of a standalone, updated NSP file for offline installation raises the specter of piracy. Yet, paradoxically, this very availability serves a preservationist function. Metal Slug Attack: Reloaded includes an online leaderboard and daily challenge system; when SNK eventually sunsets its servers, the base game cart or digital license could become a ghost of its former self. A fully updated NSP file, backed up by a user, represents a complete, offline-capable version of the game. The new update, therefore, ensures that this specific build—with its performance fixes and economic rebalance—will remain playable indefinitely on hacked hardware, long after the official eShop listing is delisted. This transforms the update from a simple bug-fix into a historical artifact of digital game preservation.
In conclusion, the new NSP update for Metal Slug Attack: Reloaded on the Nintendo Switch is far more than a collection of minor tweaks. It is a necessary surgical correction that heals the game’s technical wounds and rehabilitates its broken progression system, finally honoring the premium price tag. Furthermore, the very format of the update—the NSP—forces a critical conversation about the ethics of game preservation versus piracy. For the dedicated player, installing this update is non-negotiable; it turns a flawed port into a competent and enjoyable strategy experience. For the gaming archivist, the updated NSP represents a snapshot of a specific, improved state of a digital title, shielding it from the inevitable decay of server dependency. Ultimately, Metal Slug Attack: Reloaded’s new update proves that in the modern era, a game is never truly finished at launch—and that a proper patch can be the difference between a forgotten download and a lasting legacy.
SNK released this patch to address critical launch bugs and quality-of-life issues reported by players on the eShop version. The changes carry over directly to the NSP release.
To install an NSP update, you generally need a Nintendo Switch that is either: