How to beat Flux Constructs, use Flux Construct cores in Zelda: Tears of the Kingdom

Early on in The Legend of Zelda: Tears of the Kingdom, you will likely come across a pyramid of blocks with a red searchlight atop it, scanning the area. If you think it looks like a miniboss, you’d be entirely correct! It’s called the Flux Construct, and if you don’t know what you’re doing, you’ll quickly get absolutely bodied.

Fortunately, taking this boss down and making use of its dropped items — including the frighteningly powerful Flux Construct core — is actually fairly simple once you figure it out. Also fortunately, we’ve done the dying so you don’t have to.

Where to find Flux Constructs in Tears of the Kingdom

The first Flux Construct I you will meet is on the first Sky Island you come across, but is much easier when you have a decent weapon (around 10 attack) and a bow. Ideally, you should also have your fourth heart container and a fresh set of armor. We recommend getting as far as Hyrule Castle, grabbing the paraglider, then teleporting back to Nachoyah Shrine in the south of the Great Sky Island.

From there, head to the location marked below. The paraglider really makes a huge difference here, as you can probably imagine.

Image: Nintendo EPD/Nintendo via Polygon

Otherwise, you’ll find tons of Flux Construct bosses on both sky islands and in the Depths. You will encounter a ton of them as you look for Sage’s Wills as well.

How to beat the Flux Construct in Tears of the Kingdom

Once you engage the enemy, it will transform into a colossus that will try to pancake you with its fists. Fortunately, if you look closely, you’ll see that one of the blocks is not like the others. Which block it is appears to be random, but it’s pretty easy to spot thanks to its glowing spots.

Image: Nintendo EPD/Nintendo via Polygon

There are two ways to take down Flux Constructs, targeting their glowing cubes:

1. Simply pop that with an arrow and the baddie will take the knee. This gives you the chance to run in and whale on it with your strongest weapon. If you see it starting to get back up, sprint away like your life depends on it. (It does.)
2. Use Ultrahand to grab the glowing cube and yank it off. Doing so will make the boss crumble into pieces, allowing you to whack the glowing cube for damage freely.

If the Flux Construct turns into a horizontal platform, just Ascend up and pick one of the above methods to knock it out.

Repeat until the boss falls apart and explodes into sweet, sweet loot.

Notably, the harder iterations of the boss (Flux Construct II and Flux Construct III) work a bit differently.

Flux Construct II boss strategy

Flux Construct II does all the same stuff that its weaker cousin does, but it will float higher in the air when it turns into a horizontal platform. You will need to wait for it to spit out a row of cubes to the ground, get on top of one of the cubes, and use Recall on it to go up to the Flux Construct. You’ll be able to hit or Ultrahand the glowing cube from the top of the platform.

Image: Nintendo EPD/Nintendo via Polygon

Flux Construct III boss strategy

Flux Construct III does the same as the two above versions, but it will randomly shift the glowing cube around, making it harder to target. However, if you use Ultrahand on the glowing cube and it swaps around, you’ll still have the glowing cube selected. That said, you’ll need to be very quick with grabbing (or hitting) the correct cube before it shifts around.

How to use the Flux Construct core

Flux Constructs drop Flux Construct cores, with its number depending on which iteration of the boss that dropped it. You can’t pick this item up, but you can attach it to a weapon to give it a massive damage spike.

Simply put, equip a weapon that hasn’t been Fused yet (we used a Zonaite sword for the flavor win), use the Fuse ability to create a terrifying looking weapon. The attack power of our sword jumped from 6 to 19 when adding a Flux Construct I core, meaning this more than tripled its attack power with +13 attack. Adding a Flux Construct II core to a mighty Zonaite spear gave it +20 attack and adding a Flux Construct III core to a mighty Zonaite sword gave it +32 attack.

Wouldn’t want to get hit by that...