This is the 2026 edition; the 2025 one is still listed. It has the same 24 doors as the 2025 edition. It lists at $39.99 against $41.99 in 2025 — down 5%.
24 doorsWhat’s inside →National Geographic Mega Science 2026 Advent Calendar: what’s inside and where to buy
National Geographic's Mega Science calendar, retitled for 2026 but the same Blue Marble kit as last year's, is 24 windows of two kinds: 13 science experiments drawn from the brand's kits and 11 rock and crystal specimens, with the last window a mini dig brick holding a pyrite lump to excavate.
24 doors$39.99$1.67 a doorDoor priceThe price on the box over its 24 doors. Pricier per door than 63% of this season's toys calendars; the median is about $1.46, across 65.The rest of the numbers ↓
Curated by Max Zeshut
About National Geographic Mega Science 2026
National Geographic's Mega Science calendar, retitled for 2026 but the same Blue Marble kit as last year's, is 24 windows of two kinds: 13 science experiments drawn from the brand's kits and 11 rock and crystal specimens, with the last window a mini dig brick holding a pyrite lump to excavate. The experiments Amazon names are growing a crystal tree, making a test tube glow, floating coins, revealing a hidden message and making instant snow; the specimens include carnelian, chevron amethyst, snowflake obsidian, a geode and tiger's eye, with a storage pouch.
A bonus guide adds ten more experiments to do with household things. Pitched at ages 8 to 12.
39.99 USD from Amazon.com, sold and shipped by Amazon, in stock when checked; 4.6 stars across 750 reviews.
What’s inside National Geographic Mega Science 2026
- 24
- Items inside
- 1
- Brand inside
Thirteen science experiments from National Geographic's kits (a crystal tree, a glowing test tube, floating coins, a hidden message, instant snow among them) and 11 rock and crystal specimens (carnelian, chevron amethyst, snowflake obsidian, a geode, tiger's eye and more) with a storage pouch, the last window a pyrite specimen in a mini dig brick, plus a bonus guide of ten more experiments.
National Geographic Mega Science 2026 by the numbers
How each one is countedEvery figure is computed from the record at build time and set against the median of the same season and the same kind of contents. Door price is the price on the box over its doors; the value multiple is what the contents come to at retail over that price; full size is the retailer’s own marking. Where the record cannot support a figure, the page leaves it out rather than guessing.The definitions, one by one →Each figure against the median of this season's toys shelf — 65 calendars. Green is the better side of the median, red the worse; the median is printed so you can disagree.
- $39.99
- Price on the box
- 4 / 5
- Our rating
↑ above the median of about $34.99 for a box of this kind.
↑ above the median of 3.5 here.
Dearer than most here.
Our National Geographic Mega Science 2026 review
Our verdict
Thirteen kit experiments and eleven crystals behind 24 windows with a pyrite dig at the end, 39.99 USD and the same kit as last year's under a new title. The most to do of the National Geographic four, and the box names only a third of it.
Reviewed by Max Zeshut · 2026 season · How we review
What works
- Thirteen experiments and eleven specimens, so a door is a thing to do or a thing to keep
- Pyrite to dig out on the 24th
- Ten bonus experiments in the guide
What does not
- Amazon names five of the 13 experiments and five of the 11 stones
- 39.99 USD, the dearest of the four National Geographic boxes
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Where to buy National Geographic Mega Science 2026, and what it costs
| Region | Retailer | Price | Sponsored links |
|---|---|---|---|
| United States | Amazon | $39.99 | Buy in United StatesBuy |
| United Kingdom | eBay | £31.72 | Buy in United KingdomBuy |
| Canada | eBay | CA$49.88 | Buy in CanadaBuy |
| Australia | eBay | A$50.32 | Buy in AustraliaBuy |
| Worldwide | Don’t see your country in the list? These are the markets we have priced, and United Kingdom is the cheapest of them. Most of these retailers post further than their own border: start with Amazon, the listing at the top of the table, and its checkout will say whether it delivers to you. If none of them reach you, tell us where you are and we will go looking. | ||
Amazon prices as of 2026-10-04. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.
Cheapest at eBay in Australia, A$50.32 — about $33 — and dearest in United Kingdom at about $42, a 27% spread across 4 markets. Rough rates, for ranking only; the table has the shop’s own figures.
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How National Geographic Mega Science 2026 compares with the closest three
| Attribute | This oneNational Geographic Mega Science 2026 |  National GeographicNational Geographic Gemstone 2026 |  National GeographicNational Geographic Magic 2026 |  Cheaper per doorTonies Ein knuspriges Weihnachtsfest 2026 |
|---|---|---|---|---|
| Doors | 24 | 24 | 24 | 24 |
| Price from | $39.99 | $24.99 | $31.99 | 16,99 € |
| Per door | $1.67 | $1.24 | $1.33 | €0.71 |
| Brands inside | 1 | 1 | 1 | 1 |
| Our rating | 4/5 | 4/5 | 4/5 | 4/5 |
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24 doorsBrands with a 2026 box on this shelf: Polly Pocket, Pumuckl and Sonic the Hedgehog. Every National Geographic edition is on the National Geographic page.
National Geographic Mega Science 2026 against the 2025 edition.
See the 2025 edition| Attribute | This oneNational Geographic Mega Science 2026 |  2025 editionNATIONAL GEOGRAPHIC Science Kit & Rock Collection 2025 |
|---|---|---|
| Season | 2026 | 2025 |
| Doors | 24 | 24 |
| Price from | $39.99 | $41.99 |
| Per door | $1.67 | — |
| Brands inside | 1 | — |
| Our rating | 4/5 | — |
Frequently asked questions
How many doors does National Geographic Mega Science 2026 have?
National Geographic Mega Science 2026 has 24 doors to open.
What is the price of National Geographic Mega Science 2026?
National Geographic Mega Science 2026 starts from $39.99. Prices may vary by region.
How much is National Geographic Mega Science 2026 per door?
$1.67 a door — the price on the box over its 24 doors. That is pricier per door than 63% of this season's toys calendars we list; the median is about $1.46.
Who is National Geographic Mega Science 2026 best for?
This calendar is great for: Kids, Boys, Girls, Mom, Dad, Teenager, Family.
What's inside National Geographic Mega Science 2026?
It contains: Toys, Collectibles.
Where can I buy National Geographic Mega Science 2026?
It's available in: Australia, Canada, United Kingdom, United States.
Not quite the box you had in mind? Make a digital advent calendar instead: photos, videos and notes behind each door, sent as a link, free.
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