Mega Man’s iconic arm cannon is now live in Fortnite. Chapter 7 Season 4, titled Override, launched on August 20, 2026, and the accompanying v42.00 update added the Mega Buster to the general loot pool alongside a wave of new and returning weapons. The season also arrived with its own Admin Panel lobby hack codes tied to Epic’s pre-launch ARG, and the Mega Buster has quickly become one of the more interesting weapons to find in a match.
The weapon anchors a stacked Gaming Legends lineup this season. Sonic, Sora, and Joker join Mega Man across Override’s crossover content, while the Chapter 7 Season 4 Battle Pass reflects the same push toward outside gaming franchises. What separates the Mega Buster from a typical seasonal weapon, though, is its charge-based firing system, something Fortnite rarely builds into a standard loot-pool weapon.
Here’s how to get the Mega Buster in Fortnite, what its different attacks do, and what you need to know about its limited ammo.
What is the Mega Buster in Fortnite?
The Mega Buster is Mega Man’s signature arm cannon, adapted into a Fortnite weapon for Chapter 7 Season 4: Override.
Instead of behaving like a traditional assault rifle or SMG, the Mega Buster revolves around different levels of charged energy attacks. You can fire individual energy pellets for quick damage or hold the fire button to charge a more powerful projectile.
One of its biggest advantages is mobility. You can use the Mega Buster while moving quickly, including during sprinting and slide-boosting, which makes it particularly useful when you’re trying to pressure an opponent without slowing yourself down.
How to Find the Mega Buster in Fortnite
You don’t need to defeat a specific boss or purchase anything from the Item Shop to get the Mega Buster. It’s part of the Chapter 7 Season 4 loot pool, so finding one mostly comes down to looting.
Here’s where to look:
- Search floor loot: The Mega Buster can appear as regular floor loot around the island, so check buildings and high-density loot areas as soon as you land.
- Open chests: Loot chests give you another chance of finding the Mega Buster. Landing at larger named POIs gives you more chests to search and therefore more opportunities to find one.
- Loot eliminated players: If another player has already found a Mega Buster, eliminating them lets you pick it up along with the rest of their dropped inventory.
- Coordinate with your squad: If you’re playing Duos, Trios, or Squads, let your teammates know you’re looking for one. A teammate who finds the Mega Buster can simply drop it for you instead of everyone searching independently.
Because the Mega Buster’s ammunition can’t be replenished normally, check its remaining ammo before swapping out another useful weapon for one dropped by an eliminated player.
What Does the Mega Buster Do?
The Mega Buster isn’t just another projectile weapon. Its charge mechanic gives you different ways to attack depending on how long you hold the fire button and what’s happening around you.
1. Standard Shot
How to use it: Press and release the fire button.
The standard attack fires a single energy pellet. It’s the quickest way to use the Mega Buster and is better suited to consistent pressure when you don’t have enough time to charge a stronger attack.
Because individual shots use less of the weapon’s limited ammunition, they’re also useful when you want to conserve the Mega Buster for several encounters instead of burning through it during one fight.
2. Charged Shot
How to use it: Hold the fire button and release it after charging.
Holding the trigger lets the Mega Buster build up energy before releasing a more powerful projectile. Longer charges can produce harder-hitting attacks, including an explosive projectile capable of dealing significantly more pressure than a normal pellet.
The obvious trade-off is time. Charging leaves a larger window for an opponent to reposition, build, or return fire, so it’s better used when you’ve already created some space.
Some early hands-on reports suggest fully charged attacks consume multiple shots from the Mega Buster’s ammunition pool. Epic hasn’t published an exact ammo cost, though, so I’d avoid treating specific numbers as definitive until they’re confirmed.
3. Dash-Slide
How to use it: Press crouch while moving.
The Mega Buster also works particularly well with the season’s faster movement mechanics. You can dash or slide forward while keeping the weapon ready, letting you reposition without completely giving up offensive pressure.
This movement draws from your stamina rather than the Mega Buster’s ammunition, so you aren’t sacrificing shots every time you use it. You still can’t chain the movement indefinitely, however, because your stamina eventually needs to recover.
Mega Buster Ammo and Limitations
The biggest limitation of the Mega Buster is its ammunition. Unlike a normal Fortnite weapon, you can’t simply pick up Light, Medium, or Heavy Ammo and keep firing. The Mega Buster comes with its own fixed pool of shots, and once those are gone, you can’t refill it through ordinary ammo pickups.
Early hands-on testing has put the total capacity at around 75 shots, although Epic hasn’t officially published an exact number. Charged attacks may also consume more of that pool than individual pellets.
That changes how you should use the weapon. The Mega Buster works better as a limited-use combat tool than something you blindly fire throughout an entire match.
Standard shots are useful for conserving ammunition, while fully charged attacks are better saved for situations where you’re confident they’ll connect or force an opponent out of a strong position.
Once the weapon is empty, you’ll need to replace it or find another Mega Buster with ammunition remaining.
What Rarity Is the Mega Buster?
There’s some conflicting information around the Mega Buster’s exact rarity. Early guides have listed it under different rarity tiers, while Epic’s own description of the weapon hasn’t clearly established a classification. Until there’s a definitive in-game or official confirmation, I’d treat specific rarity claims with caution.
More importantly, its fixed ammunition and charge mechanic matter far more during an actual match than the color attached to the weapon.
Is the Mega Buster Worth Using?
The Mega Buster is worth picking up if you’re comfortable managing limited ammunition. Its biggest strength is flexibility. Quick pellets let you maintain pressure, charged attacks give you a heavier option when you have time to prepare one, and the ability to keep fighting while moving aggressively makes it feel very different from Fortnite’s conventional weapons.
The limited ammo keeps it from replacing your primary weapon, though. I’d still carry a reliable assault rifle, shotgun, or SMG alongside it rather than depending entirely on the Mega Buster for every encounter.
Think of it as a powerful secondary tool you pull out when its charge mechanics and mobility give you an advantage.
Final Thoughts
The Mega Buster is more than a cosmetic nod to Mega Man. Epic has translated the arm cannon’s signature charge mechanic into an actual Fortnite weapon, giving Chapter 7 Season 4 another crossover that changes how you play rather than simply changing how your character looks.
Mega Man’s outfit hasn’t reached the Item Shop yet, with Epic expected to release it separately during Override. With Sonic, Sora, Joker, and other Gaming Legends content also rolling through the season, the Mega Buster may only be the beginning of how much Fortnite’s weapon pool changes throughout Chapter 7 Season 4.
Early hands-on testing puts its total ammo pool around 75 shots, with charged blasts costing more per use than standard fire. Epic’s official patch notes don’t confirm an exact number.
Yes. All three fire modes work while sprinting or slide-boosting, though the dash-slide move draws from your stamina bar and can’t be spammed.
Epic confirmed the Mega Man outfit is coming to the Item Shop at a separate, unannounced date later in the season, apart from the Mega Buster’s launch-day availability.
