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LEGO

LEGO City Robot World Roller Coaster Building Set - Kids Engineering Toy with Posable Mech Suit for Boys & Girls, Ages 8+ - Gift Ideas for Christmas - 60421

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Availability: Only 3 left in stock, order soon!
Fulfilled by LifetimeDealzzz713
Arrives Wednesday, Aug 26
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Features

  • Toy roller coaster set Send kids' play soaring with this fully functional LEGO City Robot World Roller-Coaster Park adventure toy for amusement park and arcade enthusiasts ages 8 and up
  • Whats in the box? This creative building set includes everything kids need to build a robot-themed roller coaster with lots of features, including a detachable LEGO mech action figure and 8 minifigures
  • A building toy packed with details for imaginative play Features include a working 3 car roller coaster train, a posable mech with a minifigure seat and toy arcade video game consoles
  • LEGO minifigure accessories This roller coaster model comes with fun accessories for pretend play, including 3 toy cell phones, a selfie stick, 2 slushy cups, 2 video game controllers and a trophy
  • Creative gifts for kids Give this LEGO amusement park toy playset as a holiday or birthday gift for boys and girls ages 8 and up
  • A city without limits LEGO City is a place where kids can unleash their limitless imaginations, with structures, vehicles and citizens that motivate them to build, create, explore and play
  • Dimensions The roller coaster in this 986 piece building set measures over 10 in. (25 cm) high, 21 in. (54 cm) wide and 10.5 in. (27 cm) deep

Description

Kids who love gaming and amusement park toys will adore this fully functional roller coaster set. The LEGO City Robot World Roller-Coaster Park (60421) adventure toy is packed with details to inspire hours of imaginative play. Kids can send the 3 car roller coaster train whizzing through a futuristic gaming venue that houses an arcade with toy video game consoles, an e-sports arena, a slushy bar and more. The set also features a posable LEGO mech action figure and 8 minifigures for role play and storytelling fun. This creative building set includes a step-by-step printed building guide and 3D instructions in the LEGO Builder app – a digital building companion with intuitive zoom and rotate tools that enable kids to visualize models from all angles as they build. LEGO City toys make for unique and creative gift ideas and feature cool vehicles, realistic structures and fun characters that inspire play without limits. Kids can add this arcade themed building set to others (sold separately) from the LEGO City collection to expand the world of play possibilities. Contains 986 pieces.

Brand Name: LEGO


Manufacturer Minimum Age (MONTHS): 96


Sub Brand: My City


Model Name: tbd My City 60421 60421


Model Number: 6470808


Age Range Description: Kid


Customer Package Type: FFP


Manufacturer Maximum Age (MONTHS): 1200


UPC: 673419390095


Included Components: LEGO Building Elements


Item Type Name: Building Kit


Manufacturer: LEGO


Model Year: 2024


Manufacturer Part Number: 6470808


Color: Multicolor


Theme: LEGO


Subject Character: Robot


Number of Pieces: 986


Item Dimensions: 21.26 x 11.1 x 3.58 inches


Item Weight: 4.1 pounds


Educational Objective: Concentration


Additional Features: Since 1958, LEGO bricks have met the highest industry standards, so they are consistent, compatible and connect and come apart easily every time – and it's still that way today


Toy Building Block Type: Interlocking Toy Building Block


Material Type: Plastic


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Aug 26

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Incredible LEGO Set With Amazing Detail and Tons of Play Value!
This LEGO roller coaster set is absolutely fantastic — from the moment you open the box, you can tell it’s something special. The design, colors, and futuristic robot theme make it one of the most eye-catching sets out there. Kids who love amusement parks, robots, or STEM-style builds will be obsessed with it. 🔹 Awesome Design & Super Fun Theme The combination of a twisting roller coaster track with a full robot-themed gaming park is unbelievably fun. There are tons of details: an arcade area, a DJ booth, a slushy bar, and even a giant mech suit that moves. It looks incredible displayed and is just as fun to play with once it’s built. 🔹 Big, Satisfying Build With Great Instructions With a high piece count and a multi-level design, this set keeps kids engaged for hours. The instructions are clear and easy to follow, and the final build feels sturdy and impressive. The curved neon-green track pieces stand out and make the coaster look fast and futuristic. 🔹 Smooth Roller Coaster Function & Great Figures The coaster itself rolls well and has several fun twists and turns. The included minifigures are colorful and unique, adding a lot of character and play possibilities. Kids can send the coaster around, pose the mech, or act out scenes in the arcade — there’s no shortage of things to do. 🔹 A Showstopper Gift This set looks huge and exciting when assembled, making it an amazing birthday or holiday gift. It’s the type of LEGO build that kids proudly keep displayed long after finishing it. ✅ Pros: Fantastic theme with tons of detail Roller coaster works smoothly Large, impressive multi-level build Includes great minifigures and accessories Perfect for kids who love engineering-style sets ❌ Cons: None — it’s a standout LEGO set in every way Overall: This is a top-tier LEGO set that delivers creativity, playability, and wow-factor all at once. Fun to build, fun to play with, and totally worth the 5 stars. ... show more
Reviewed in the United States on November 17, 2025 by Amazon Customer
    • Fun for adults too! Amazing theme park vibes and fully functional.
Review Image by Mel
Review Image by Mel
This Lego set is an absolute blast, and honestly, even as an adult, I find it incredibly fun! My son is 4.5 years old, and by using the LEGO Builder app, he was able to put most of it together with very little help from me. The attention to detail in this set is amazing—the minifigures are so cool and well-designed, and all the small features make you feel like you've actually stepped into a real theme park. Best of all, the roller coaster is fully functional and actually works smoothly. It’s highly engaging and worth every penny! ... show more
Reviewed in the United States on June 27, 2026 by Mel
    • So many features for imaginative play!
This was a fantastic Lego set for my kiddo - took a decent amount of time to assemble, lots of different scenes within the one set so there are multiple areas for play, the moveable roller coaster on the track has been a big hit as well. It has now been imagined many times over as a theme park, military base, arcade, school, restaurant, and battle zone. So many fun parts to this set! Design, quality and fun factor are A++! ... show more
Reviewed in the United States on March 12, 2026 by SEKD
    • Stick to Lego for coaster sets
Lego has always been a go to for the family. We tried looking in to a few sets that were "comparable" to Lego. Wasnt a bad experience with the 5 sets were tried from 3 different manufacturers but enough to stick to Lego in regards to roller coaster sets. Reason being simple, quality builds and sturdy infrastructure. The non-Lego sets were ok but two of them required better build supports and required extra (Lego) parts to stabilize. This set was sturdy, fun, and when the coaster is rolling, doesnt sound hollow. Kids love it and sets like these, we will stick with the Lego brand. Easy to follow instructions, great theme, and sturdy build. ... show more
Reviewed in the United States on May 4, 2026 by Derbs
    • Super cool toy
This roller coaster park Lego set was awesome. It has an arcade in the back, and the roller coaster that goes around the park. The set comes with 986 pieces, and takes 3 hours to build. The set is fairly durable, and the roller coaster can fit 3 minifigures. The set also has an articulated robot, which has space for a minifigure. Overall, I really enjoyed this cool set. ... show more
Reviewed in the United States on June 29, 2026 by Karen
    • Fun Lego roller coaster
My son LOVED building this roller coaster. He is 9. High quality. No pieces missing. Very fun
Reviewed in the United States on May 9, 2026 by Mirella
    • Great Gift
Child (age range 10-12) was thrilled to receive this toy and was able to built it independently. He plays with it constantly.
Reviewed in the United States on July 15, 2026 by GrammarGeek
    • Great Lego set!
Review Image by Alisha Dempster
Great Lego set! My son is obsessed with Lego trains but we like to throw in some Lego coasters for a change sometimes and this was a good one.
Reviewed in the United States on July 15, 2026 by Alisha Dempster

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