A new crossover has arrived in Fortnite, bringing the cult-classic indie title The Binding of Isaac into the battle royale. What started as a dataminer leak has now been confirmed and officially launched in the in-game shop.
Leak turns into reality
Hints of the collaboration first appeared after the Chapter 6 Season 4 update, when well-known Fortnite dataminer ShiinaBR revealed the details on September 10. Among the leaked items was a back bling featuring Isaac himself, designed with interactive reactions.
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Shortly after, The Binding of Isaac creator Edmund McMillen stepped in to confirm that the leak was indeed real, hinting that the release was coming sooner than expected. He wasn’t exaggerating—Epic Games pushed the bundle live on September 11, just a day after the reveal.
Items included in the bundle
The crossover is available both as a bundle and as standalone purchases, with each item carrying nods to the roguelike classic:
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The Binding of Isaac Bundle – 1,000 V-Bucks
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Isaac Back Bling – 600 V-Bucks
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Duo of Flies Emote – 500 V-Bucks
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Mom’s Knife Pickaxe – 500 V-Bucks
The back bling is especially detailed—it sheds tears whenever your character takes damage and cheers up when you open a chest. The Mom’s Knife pickaxe goes a step further, with Isaac’s reflection appearing in different emotional states depending on its angle.
Limited-time release
Players don’t have long to grab these cosmetics. The bundle and its items will remain in the Fortnite shop until September 18, 2025, at 5:00 PM. After that, they’ll be rotated out, with no word yet on when (or if) they will return.
A nod to fans of both games
While the crossover only includes a handful of items, the small touches pay tribute to The Binding of Isaac’s signature style. The crying animations and knife detail capture the essence of the indie game in ways that go beyond a simple skin.
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Whether this paves the way for more collaborations down the line remains to be seen, but for now, fans of both Fortnite and Isaac have a unique reason to log in and explore the shop before the items disappear.
FAQs
1. When did the Binding of Isaac Fortnite collaboration go live?
The crossover was added to the Fortnite shop on September 11, 2025.
2. How much does the Binding of Isaac bundle cost?
The full bundle is priced at 1,000 V-Bucks, with individual items ranging from 500 to 600 V-Bucks.
3. What items are included in the crossover?
The bundle includes Isaac Back Bling, Duo of Flies Emote, and Mom’s Knife Pickaxe.
4. Until when will the Binding of Isaac items be available in Fortnite?
The cosmetics will stay in the shop until September 18, 2025, at 5:00 PM.
5. Do the Isaac cosmetics have special effects?
Yes, Isaac’s back bling reacts to damage and chest openings, while the Mom’s Knife pickaxe shows different reflections of Isaac’s face.
