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Mega Bloks Build 'N Play Barbie Underwater Castle

Don't pay more elsewhere for this awesome kids’ toy!

Add real water & see Mermaid Barbie change her tail colour!

Splash around in a brand new scenery of ocean fun. Build two levels of enchantment with this colourful palace and decorate it any way you like with lots of sparkling seashells and glittering blocks - there's even a treasure chest! Add real water to create lots of splashy laughs and witness the Mermaid Barbie mini fashion figure's tail change colour! Join Mermaid Barbie and Mermaid Nikki mini fashion figures that can really swim with their 360˚ spinning platform in their colourful and bendable tailfins. Splash and laugh with their included pretty pink and purple seahorses leap through loops!


  • Mega Bloks toys
  • Design: Build 'N Play Barbie Underwater Castle
  • Model no: DBM21
  • Includes 419 pieces
  • Mermaid Barbie mini fashion figure tail changes colour in water
  • Mermaid Nikki mini fashion figure with mobile tail
  • Cute ocean seahorses, crabs, starfish for lots of splashy playtime
  • Includes building instructions
  • Recommended for ages: 4 years+
  • Country of origin: China

Customer Reviews


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18 June 2016

My daughter loves it

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11 May 2016

Excellent purchase

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24 April 2016

This is for a present which hasn't been given yet, but looks great.

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20 November 2017

12 February 2017