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Underwater Adventure (21598)

Name: Underwater Adventure
Brand: LEGO
SKU: 21598

LEGO.com RRP:

£24.99

🧱 310 pieces - : £0.08

Available From

LEGO.comOfficial

£24.99

Price updated: 14 Jun 2026

View on LEGO →

Building Instructions Brickset

Price Analysis

Lowest Price Ever

£24.99

at LEGO.com · May 2026

Average Price (12mo)

£24.99

Current vs Average

0.0%

Near average

Price Trend

Stable

Last 30 days

Value Score

10.0/10

Price-per-piece vs theme avg

The lowest price we've recorded for Underwater Adventure is £24.99 at LEGO.com in May 2026. The current price is close to the 12-month average of £24.99.

Price History & Buying Verdict

VerdictNo strong signal yet

•On price-per-piece, this is one of the better-value sets in the Minecraft® range (value score 10.0/10 vs theme average).

We've been tracking the price of LEGO Minecraft® Underwater Adventure (310 pieces) for 42 days, recording 7 data points across LEGO.com and major UK retailers. Over that period the price has dropped 0 times below previous levels, with the lowest price ever recorded being £24.99 at LEGO.com in May 2026.

The 12-month average sale price for set 21598 works out to £24.99 — that's 0% above the LEGO RRP of £24.99. The highest price we recorded across our tracked retailers was £24.99, giving a range of about £0.00 between the cheapest and most expensive observation.

Want to see how LEGO Underwater Adventure (set 21598) compares against other sets? Browse the best-value LEGO sets or check the full price-history tracker.

Description

Underwater Adventure (21598) is a LEGO Minecraft® set with 310 pieces, with an RRP of £24.99. Prices have been stable over the last 30 days. With a value score of 10.0/10, this set offers excellent value compared to other Minecraft® sets.

SpecificationsDive into gaming action with this Underwater Adventure (21598), a LEGO® Minecraft® building set gift for boys, girls and kids ages 8 years old and up. Players join Steve, the Deep Sea Diver, a drowned, dolphin, tropical fish, guardian and elder guardian as they explore and battle among coral, an ocean monument and an ocean ruin with buried treasure. Fans of the popular video game can recreate Minecraft ocean adventures, helping Steve use his map and boat to embark on an exciting journey. On the way, they battle hostile guardians who try to obstruct Steve’s plans by launching missiles. There’s endless imaginative play inspired by the toy’s accessories, such as Steve’s sword, axe and spyglass, the drowned’s trident and buried treasure chest containing gold and an emerald. Treat kids to this birthday, holiday or any day Minecraft gift idea. And with the LEGO Builder app, kids can zoom, rotate in 3D and track progress with easy-to-follow digital instructions. Set contains 310 pieces.

Features

UNDERWATER TOY BUILDING SET – Make a splash with this ocean-themed LEGO® Minecraft® Underwater Adventure (21598) playset for fans of the popular video game
7 LEGO® MINECRAFT® FIGURES – Dive in and discover coral, an ocean monument and a ruin with buried treasure with Steve, the Deep Sea Diver, a drowned, dolphin, fish, guardian and an elder guardian
PRETEND PLAY TOY – Steve explores the ocean using a map and a boat as a friendly dolphin guides him on his adventure, until missile-launching guardians start an underwater battle
AUTHENTIC ACCESSORIES – Bring the adventure to life with realistic details like Steve’s sword, axe and spyglass, the drowned’s trident and a treasure chest containing gold and emeralds
GIFT FOR GAMERS – This birthday, holiday or any-day gift for boys and girls ages 8 and up makes a great treat for fans of gaming and Minecraft® merch
EXPAND THE FUN – Check out the full range of building sets (sold separately) and take hands-on gaming to the next level
MINECRAFT® MADE REAL – Players can create and customize scenes from the popular game, rearranging, recreating and reimagining as new adventures take shape
DIMENSIONS – This 310-piece building set measures over 2.5 in. (7 cm) high, 8 in. (20 cm) wide and 3.5 in. (9 cm) deep

Frequently Asked Questions about Underwater Adventure

What is the best price for LEGO Underwater Adventure (Set 21598)?

LEGO Underwater Adventure (Set #21598) is currently priced at £24.99 on LEGO.com. We continuously monitor prices across multiple UK retailers to find you the best deals.

How many pieces are in LEGO set 21598?

LEGO Underwater Adventure (Set #21598) contains 310 pieces. At the LEGO.com price of £24.99, that works out to approximately 8.1p per piece.

What age is LEGO Underwater Adventure suitable for?

LEGO Underwater Adventure (Set #21598) is recommended for ages 8+. This set is part of the LEGO Minecraft® theme. View all Minecraft® sets and deals.

Where can I find the building instructions for LEGO Underwater Adventure?

You can download the official building instructions for LEGO Underwater Adventure (Set #21598) for free from LEGO.com. Download the building instructions here. The instructions are available as a PDF and can be viewed on any device.

Where can I buy LEGO Underwater Adventure in the UK?

LEGO Underwater Adventure (Set #21598) is available from LEGO.com at £24.99. We're monitoring other UK retailers for availability. Check our recent price drops for updates.

What is the lowest price ever recorded for LEGO Underwater Adventure?

The lowest price we've recorded for LEGO Underwater Adventure (Set #21598) is £24.99 at LEGO.com in May 2026. That's 0% off the LEGO RRP of £24.99. Track the latest movements on our LEGO price history page.

Is LEGO Underwater Adventure good value for money?

Comparing piece-count to price across the LEGO Minecraft® theme, this set scores 10.0 / 10 for value. That works out to about 8.1p per piece. That puts Underwater Adventure in the top tier of Minecraft® sets for raw build value — you're paying noticeably less per brick than the theme average. Compare against other contenders on our best-value LEGO sets page.