LEGO Minecraft Underwater Adventure - Building Toy for Boys & Girls, Ages 8+ - Minecraft Toys, Figures & Playsets - Gift for Kids & Gamers - 21598
LEGO Minecraft Underwater Adventure - Building Toy for Boys & Girls, Ages 8+ - Minecraft Toys, Figures & Playsets - Gift for Kids & Gamers - 21598
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LEGO Minecraft Underwater Adventure - Building Toy for Boys & Girls, Ages 8+ - Minecraft Toys, Figures & Playsets - Gift for Kids & Gamers - 21598

102 ratings

At a glance

BrandLEGO
ThemeLEGO Minecraft
Piece count310
Minimum recommended age8 years
FeaturesCollectible

About this item

Product details

Gaming fans can dive into an epic ocean-themed expedition with the LEGO Minecraft Underwater Adventure (21598) building toy for boys and girls ages 8 years old and up. This ocean-themed building playset is packed with details from the popular video game, including a coral build, an ocean monument and an ocean ruin with buried treasure. The set also features 7 LEGO Minecraft figures including Steve, a Deep Sea Diver, a drowned, a dolphin, a tropical fish, a guardian and an elder guardian, plus fun accessories like a sword, axe, spyglass, trident and a buried treasure chest filled with gold and emeralds. Kids can help Steve use his map and boat to explore the ocean depths with a friendly dolphin guiding the way, take cover from missile-launching guardians or dream up their own pretend play battles and adventures under the sea. Between playtimes, kids can display their completed build on a shelf or alongside other LEGO Minecraft sets (sold separately) to create cool room decor that fellow gamers will appreciate. Makes a great birthday gift or special occasion present for kids who love Minecraft toys and creative building. For a convenient building experience, check out the LEGO Builder app, where kids can zoom in, rotate sets in 3D, track their progress and follow a step-by-step digital version of the printed instructions. Contains 310 pieces.
  • HELP STEVE FIND GOLD – The LEGO Minecraft Underwater Adventure (21598) building toy for boys and girls ages 8 years old and up lets fans recreate ocean adventures from the popular video game
  • 7 LEGO MINECRAFT FIGURES – This building playset comes with 7 LEGO Minecraft figures, including Steve, a Deep Sea Diver, a drowned, a dolphin, a tropical fish, a guardian and an elder guardian
  • COOL STORYTELLING DETAILS – Builders can explore a coral build, discover an ocean monument with a ruin, hunt for buried treasure or help Steve dodge missile-launching guardians
  • ACCESSORIES FOR PRETEND PLAY – Kids can arm Steve with his sword, axe and spyglass, give the drowned its trident and dig up a buried treasure chest filled with gold and emeralds
  • MINECRAFT GIFT FOR KIDS – Makes a great birthday gift or special occasion present for kids who love Minecraft toys, gaming and LEGO building sets
  • A FUN WAY TO BUILD – The LEGO Builder app guides kids on an intuitive building adventure where they can save sets, track their progress and use 3D instructions to zoom in and rotate models as they build
  • DIMENSIONS – When fully assembled, this 310-piece LEGO Minecraft building set measures over 2.5 in. (7 cm) high, 8 in. (20 cm) wide and 3.5 in. (9 cm) deep
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Specifications

Brand

LEGO

Theme

LEGO Minecraft

Piece count

310

Minimum recommended age

8 years

Warranty

Warranty information

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Customer ratings & reviews

4.9 out of 5 stars
stars
102 ratings65 reviews
How item rating is calculated
  1. 5 stars95% (97)
  2. 4 stars2% (2)
  3. 3 stars2% (2)
  4. 2 stars0% (0)
  5. 1 star1% (1)

Reviews summary

Pros

  • : The directions matched the stated age difficulty.

Cons

  • : The price exceeds the product benefits.
Generated by AI
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
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Showing 1-3 of 65 reviews

Oct 19, 2026
Reviewer name: DelaneyC
5 out of 5 stars
5 out of 5 stars review

Lego obsessed toddler approved

[This review was collected as part of a promotion.] My son is a LEGO fiend. He needs something that falls in the middle of- not difficult, but also not easy. This was perfect for him. He was occupied and having fun for a few hours building, and then continued to play and have a blast once everything was done. Safe for him to do on his own, and not huge for storage capacity. Since it's plastic, I see him utilizing this for a long time!

Review from LEGO
Helpful?4ISKLOR9KSG818682100755
Oct 16, 2026
Reviewer name: LeidyA
5 out of 5 stars
5 out of 5 stars review

making it perfect for play in various settings,

[This review was collected as part of a promotion.] The LEGO Underwater Adventure is a highly entertaining option for children who enjoy building and exploring. The pieces help develop creativity, imagination, and coordination, all while providing fun during the assembly process. It is an ideal activity for families to enjoy together and a great way to keep little ones occupied. Furthermore, following the instructions to build the set helps children practice patience and concentration.It offers a great experience, with pieces that allow for fun and creative building. It is easy to transport, making it perfect for play in various settings, and provides good value by combining entertainment, imagination, and learning-helping children develop concentration and coordination while they have fun.

Review from LEGO
Helpful?4ISKLOR9KSG818682100755
Oct 20, 2026
Reviewer name: JoannD
5 out of 5 stars
5 out of 5 stars review

Fun item to put together not too complicated

[This review was collected as part of a promotion.] It didn't take long to put together and was straight forward with the instructions. Cute little set to put together and had all the parts that it said it would.

Review from LEGO
Helpful?4ISKLOR9KSG818682100755
Current price is $29.97
Price when purchased online
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$29.97
$20.00

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