How to smash the big metal blocks in Super Mario Odyssey

***Contains major story spoilers***

When you’re running around in each Kingdom in Super Mario Odyssey, you will notice there is a massive metal block just sitting there. Watching you. If you go up close to it, you’ll spot the cracks in it, just taunting you with their fragility. But try and as you might - and trust us, you will - there’s just nothing that you can do that will break it. 

So then how do you break the big metal blocks in Super Mario Odyssey. Well, it’s actually linked to a whole tonne of story and end-game content. If you want to remain totally in the dark about what happens at the end of Odyssey look away now, seal your eyes and ears and wait for all to be revealed. But if you do want to know, here’s how you do it. 

***This is your last spoiler warning***

How to break the metal blocks in Super Mario Odyssey

Once you’ve worked your way through all the Broodal bosses in Bowser’s Kingdom, you’ll have to follow Bowser to the moon. Trust Bowser to have his totally consensual wedding in a church on the moon, surrounded by all that stuff he stole from the Kingdoms back on Earth. 

As you bounce in zero-G, Cappy will notice that there are similar metal blocks sitting the moon’s craters. Coincidence? We think not. But it gets even more interesting than that. 

Follow the story, fight and defeat Bowser and then it all starts to get a bit weird. The massive ring Bowser stole from the Sand Kingdom dissolves, releasing her but also a torrent of those metal blocks, which makes the whole underground moon lair start crumbling around you. Time to run. 

It turns out those metal blocks are actually moon rocks and are the source of all the Power Moons, ever. Once you’ve done all the story content and watched the credits roll, you’ll notice that there’s an image of one of these moon rocks surrounded by frogs in top hats. That’s actually the metal block from Cap Kingdom and instead of simply being a bit cracked, it’s now splintered and all the glowiness is seeping out. 

And that’s the same for all the metal blocks you saw throughout the game. Head back to any of the Kingdoms and Cappy will prompt you to head for the block. He’ll even mark it on the map for you and there will be a glowing beacon in the sky to guide you towards it. 

Once you get to one, you’ll be able to crack it open simply by throwing Cappy at it. No wonder you couldn’t break it open earlier. Doing so will release even more moons into each Kingdom, and much to our delight, these extra moons are all marked on the map. You’ve just got to work out how to get to each one.