Metroid Fusion Wiki

Sci-Fi Metroidvania Survival Adventure

Explore the BSL research station as Samus Aran, hunt X parasites, escape the deadly SA-X, defeat bosses and recover powerful upgrades.

Nov 17, 2002 ReleaseMetascore 92/100User Score 8.8/10GBA & Switch Online

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Your Metroid Fusion Journey

1

Beginner Guide

Learn Samus's controls, the Navigation Room mission structure, and the core exploration loop of Metroid Fusion before anything else.

2

First Boss Guide

How to read attack patterns and bring down Arachnus, the first major boss aboard the B.S.L. station.

3

Map & Where to Go

Every sector of the B.S.L. research station explained, so you always know where to head after each mission briefing.

4

Power Ups & Abilities

What each ability does and how unlocking Morph Ball, Speed Booster, and new beams opens up previously unreachable areas.

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Discover the release date of Metroid Fusion and why it's a must-play on the Nintendo Switch.

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Discover the key differences and similarities between Metroid Fusion and Metroid Dread in this in-depth comparison article.

Mastering Metroid Fusion: A Comprehensive Guide

Discover essential tips, tricks, and strategies for conquering the iconic Metroid Fusion. Your ultimate guide to success!

Metroid Fusion 100 Percent Walkthrough: Master the Game

Discover the ultimate Metroid Fusion 100 percent walkthrough guide. Master every aspect of the game with our detailed strategies and tips.

Metroid Fusion how long to beat

Uncover the total playtime for Metroid Fusion, including the main story and 100% completion. Find out how long it takes to beat the game and learn tips to enhance your experience.

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Uncover the path forward in Metroid Fusion after facing the challenge of Nightmare. This guide will lead you through the next stages of your journey.

Metroid Fusion: The Point of No Return You Can't Miss

Discover the critical point of no return in Metroid Fusion and how it impacts your game experience.

Ultimate Metroid Fusion Walkthrough: Your Complete Guide

Discover the secrets of Metroid Fusion with our ultimate guide. Find every boss, hidden item, and secret path.

Defeating the Metroid Fusion Nightmare Boss: A Comprehensive Guide

Learn how to conquer the Metroid Fusion Nightmare boss with our expert tips and strategies. Discover its weaknesses and battle mechanics.

Master the Metroid Fusion Boss Order: Your Ultimate Guide

Discover the perfect Metroid Fusion boss order and strategies to conquer each challenging encounter.

Mastering Metroid Fusion: A Comprehensive Guide to Beating the Bosses

Unlock the secrets to conquering Metroid Fusion's challenging bosses with our in-depth guide. Learn strategies, tips, and tricks to dominate the game!

Mastering the Metroid Fusion Yakuza Boss: A Comprehensive Guide

Discover essential strategies and tips to conquer the challenging Yakuza boss in Metroid Fusion. This guide is a must-read for any fan of the series!

Metroid Fusion all bosses

Explore the strategies and techniques for defeating every boss in Metroid Fusion, from Arachnus-X to Omega Metroid.

Master the Metroid Fusion Main Deck Map: Your Ultimate Guide

Discover the secrets of the Metroid Fusion Main Deck Map with our comprehensive guide. Navigate the station like a pro!

Mastering the Metroid Fusion Interactive Map: A Comprehensive Guide

Discover essential tips and strategies to navigate the Metroid Fusion interactive map with ease. Uncover hidden secrets and maximize your gaming experience.

Metroid Fusion Full Map: The Ultimate Guide to Every Secret

Discover every hidden area, boss encounter, and item location in Metroid Fusion with our comprehensive full map guide.

Metroid Fusion Map: A Comprehensive Guide to Completing Every Aspect

Discover the ins and outs of the Metroid Fusion map with our complete guide, including boss locations, item expansions, and hidden areas.

Metroid Fusion Sector 1 Map: A Comprehensive Guide

Discover the secrets of Metroid Fusion Sector 1 with our detailed map guide. Navigate through this challenging area with ease!

Master the Metroid Fusion Upgrade Order: Your Ultimate Guide

Discover the perfect order for Metroid Fusion's upgrades and become a pro! Find out where to get them all.

Mastering Metroid Fusion: A Guide to Item Locations

Discover the hidden locations of Metroid Fusion's essential items for a complete gaming experience.

Mastering the Metroid Fusion Power Bomb: A Comprehensive Guide

Unlock the secrets of the Metroid Fusion Power Bomb with our ultimate guide, including locations, strategies, and tips for success.

Metroid Fusion energy tank locations

Uncover the precise locations of all Energy Tanks in Metroid Fusion with our detailed guide.

Unlocking the Secrets of Metroid Fusion: A Comprehensive Guide to All Items

Discover where to find every Metroid Fusion item and how to unlock them with our ultimate guide to all items.

Mastering the Metroid Fusion Final Suit: A Comprehensive Guide

Discover everything you need to know about the Metroid Fusion Final Suit, including its design, gameplay impact, and more.

Mastering the Metroid Fusion Fusion Suit: A Comprehensive Guide

Discover everything you need to know about the iconic Metroid Fusion Fusion Suit, including its features, benefits, and how it enhances gameplay.

Mastering the Metroid Fusion Gravity Suit: A Comprehensive Guide

Discover everything you need to know about the Metroid Fusion Gravity Suit, including its benefits, locations, and how to acquire it in the game.

Mastering the Metroid Fusion Varia Suit: A Comprehensive Guide

Discover the full power of the Metroid Fusion Varia Suit with our ultimate guide, including benefits, locations, and tips for Samus Aran.

Metroid Fusion GBA: A Retro Masterpiece Revisited

Discover the magic of Metroid Fusion for GBA, a game that redefined the platformer genre. Dive into its history, gameplay, and why it's a classic.

Metroid Fusion Release Date: A Retro Revival on Nintendo Switch

Discover the release date of Metroid Fusion and why it's a must-play on the Nintendo Switch.

Metroid Fusion Switch: Revisiting Samus Aran's Classic Adventure

Explore why Metroid Fusion, a timeless classic, is a must-play on the Nintendo Switch platform.

Reviving the Legacy: Metroid Fusion NSO Delivers Classic Gameplay to Modern Times

Discover how Metroid Fusion NSO brings a beloved classic to the Nintendo Switch platform, with tips and insights for fans and newcomers alike.

Decoding the Mysteries of Metroid Fusion Endings

Explore the different endings of Metroid Fusion and how they are influenced by your gameplay. Discover the secrets behind the game's unique conclusions.

Master the Metroid Fusion Ending: A Comprehensive Guide

Unlock the secrets to achieving the ultimate Metroid Fusion ending. Discover the requirements, tips, and tricks to master this classic game.

Mastering the Metroid Fusion Best Ending: Your Ultimate Guide

Unlock the secrets to achieving the best ending in Metroid Fusion with our comprehensive guide. Discover tips, tricks, and player experiences to conquer this classic.

Unlock the Secrets of Metroid Fusion: All Endings Explained

Discover every ending of Metroid Fusion, from the North American and European versions to the Japanese exclusive ones. Don't miss out on the secrets hidden within!

A Deep Dive into 'Metroid Fusion': A Retrospective Look at the Classic

Discover the groundbreaking aspects of 'Metroid Fusion' and why it remains a fan favorite after all these years.

Metroid Fusion Review: A Timeless Classic That Still Holds Up

Discover why Metroid Fusion remains a fan favorite with its engaging gameplay, unique setting, and thrilling boss battles.

Metroid Fusion vs Dread: A Head-to-Head Comparison

Discover the key differences and similarities between Metroid Fusion and Metroid Dread in this in-depth comparison article.

What is Metroid Fusion?

Metroid Fusion is a side-scrolling action-adventure game developed by Nintendo R&D1 and released for the Game Boy Advance in 2002. You play as bounty hunter Samus Aran, who survives an X parasite infection thanks to an emergency Metroid vaccine, then returns to the Biologic Space Laboratories research station to contain the outbreak while being hunted by the SA-X, a deadly copy of herself at full power.

Exploration and ability-gated progression define the experience: every boss you defeat grants an upgrade that unlocks previously inaccessible sectors of the station. Metroid Fusion is playable today through Game Boy Advance - Nintendo Switch Online, and this wiki covers every sector, boss, item, and story beat with complete maps and step-by-step walkthroughs.

Explore All Guides

Developer

Nintendo R&D1

Platform

GBA / Switch Online

Genre

Action-Adventure

Release Date

Nov 17, 2002

Metascore

92/100

User Score

8.8/10

Explore the Metroid Fusion Wiki

Complete guides to every corner of Metroid Fusion — walkthrough, sector maps, bosses, power ups, collectibles, story, and how to play it today.

Metroid Fusion Walkthrough

A progression-focused walkthrough covering the main route through the B.S.L. station, mission objectives, sector access, Navigation Rooms, and major progression checkpoints. Organized by story sequence so you can quickly find what to do next when stuck.

1Follow Adam's briefings in the Navigation Rooms
2Investigate the X outbreak across the Main Deck
3Clear each sector as new missions unlock
4Defeat bosses and absorb their Core-X abilities
5Raise security levels to open locked doors
6Escape the station before the final countdown
Read Full Guide

Metroid Fusion Map and Sector Guide

Cover the B.S.L. station layout and the six main sectors, including important rooms, hidden routes, elevators, security doors, and progression paths. Understand where each sector leads and how newly unlocked abilities open previously inaccessible areas.

Main DeckHub of the station — elevators, Navigation Rooms, and the final escape route
SRXSector 1 simulates SR388 — rocky terrain where the X first overrun containment
TROSector 2 tropical zone — overgrown vines hide missile tanks and hidden shafts
PYRSector 3 desert and magma chambers — heat hazards guard early power ups
AQASector 4 flooded depths — strong currents and drifting X block the lower routes
ARCSector 5 frozen caverns — cold rooms seal doors and slow Samus down
NOCSector 6 nocturnal habitat — dark passages patrolled by hunting X
Read Full Guide

Metroid Fusion Bosses

A boss guide covering major encounters such as Arachnus, Serris, Nightmare, Yakuza, Neo Ridley, SA-X, and the Omega Metroid. Each boss page summarizes its location, attack patterns, required abilities, and practical strategies for defeating it.

ArachnusMain Deck — a rolling armored foe; break the shell, then finish it with missiles
SerrisSector 4 AQA — races through water channels; punish it when it slows to turn
NightmareSector 5 ARC — warps gravity; destroy its mask, then target the exposed core
YakuzaSector 6 NOC — a towering spider boss fought in two escalating phases
Neo RidleySector 1 SRX — the final sector boss with flame breath and grab attacks
SA-XRecurring hunter — hide or flee until the scripted final confrontations
Omega MetroidStation finale — survive its claws and end it with the Hyper Beam
Read Full Guide

Metroid Fusion Power Ups and Abilities

Samus's major upgrades explained: Morph Ball, Bombs, Speed Booster, Space Jump, Screw Attack, Wave Beam, Ice Missiles, Diffusion Missiles, and upgraded suits — what each ability does and how it changes exploration or combat.

Morph BallRoll through narrow passages and reach hidden shafts
BombsDetonate explosives in ball form to break weak blocks
Speed BoosterBuild up a run to dash through enemies and cracked walls
Space JumpChain spins in midair to cross wide gaps and tall shafts
Screw AttackSomersault through enemies as a living weapon
Wave BeamFire shots that pass through walls and cover wide arcs
Ice MissilesFreeze X parasites and enemies solid on contact
Diffusion MissilesCharge a missile to freeze everything in the blast radius
Gravity SuitMove freely underwater and resist environmental damage
Read Full Guide

Metroid Fusion SA-X and the Point of No Return

What the SA-X is, why it hunts Samus, and every encounter with it aboard the B.S.L. station. Includes survival tips, chase sequences, story significance, and the eventual SA-X battle.

1Understand the threat — an X copy of Samus with her full arsenal
2Stay hidden during patrols — noise and line of sight draw its fire
3Flee scripted chases instead of trying to fight early
4Track its appearances after major boss fights and sector events
5Learn its attack patterns before the real showdown
6Face it in the final confrontations aboard the station
Read Full Guide

Metroid Fusion Missile Tanks and Energy Tanks

Collectible upgrades covered in full: Missile Tanks, Energy Tanks, and Power Bomb Tanks, including which of Samus's movement abilities reach each hidden item. Structured by sector so you can track what is still missing.

Main DeckTanks tucked into service shafts and elevator-side alcoves
SRXTanks hidden behind Speed Booster blocks and crumble walls
TROVine-covered passages that need Bombs or Space Jump to clear
PYRHeat rooms guarded by lava drips and armored X
AQADeep-water routes where the Gravity Suit pays off
ARCFrozen corridors — some tanks sit behind ice-crystal walls
NOCDark crawlspaces best searched with the Morph Ball
Read Full Guide

Metroid Fusion Story and Ending

The full story from Samus's infection by the X parasite to the destruction of the B.S.L. station and SR388 — the Metroid vaccine, the Adam computer, the SA-X, the Galactic Federation conflict, and how the ending connects to Metroid Dread.

1Samus is infected by an X parasite during an SR388 survey
2The Metroid vaccine saves her life at the cost of her suit powers
3Adam dispatches missions aboard the B.S.L. research station
4The SA-X mystery deepens as more sectors fall to the X
5The Galactic Federation's secret plan forces a final choice
6Destroy the station and SR388 — the road to Metroid Dread
Read Full Guide

Metroid Fusion Nintendo Switch Guide

How to play Metroid Fusion through Game Boy Advance - Nintendo Switch Online, including the required Nintendo Switch Online + Expansion Pack membership, plus a concise overview of exploration, combat, upgrades, and save-based progression for new players.

1Get a Nintendo Switch Online + Expansion Pack membership
2Launch the Game Boy Advance Nintendo Classics app
3Select Metroid Fusion from the game library
4Use save states and rewind to ease difficult sections
5Remap buttons for a more comfortable modern layout
6Pick up where you left off with save-based progression
Read Full Guide

Frequently Asked Questions

Quick answers to the most common questions about Metroid Fusion.

Ready to Explore the BSL Station?

From your first landing on the BSL research station to the final escape sequence, our community wiki covers every map, item, boss, and SA-X encounter with free, up-to-date guides.