How many pieces are in the RePLAY Challenge Kit?

RePLAY Challenge Kit contains 1,634 pieces.

What age is the RePLAY Challenge Kit recommended for?

This set is recommended for ages 9+.

When was the RePLAY Challenge Kit released?

RePLAY Challenge Kit was released in 2020.

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No. 45813

FIRST LEGO League

RePLAY Challenge Kit

RePLAY Challenge Kit 45813-1 is an essential centerpiece for competitive FIRST LEGO League teams and STEM enthusiasts.

Time on the shelf Retired

On sale Aug 2020 to Dec 2022

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Before you buy

Who it's for: Ages 9+ · Advanced build Perfect for FIRST LEGO League teams, educators, and advanced Technic builders
Build: 1,634 pieces · about 4.5 hours Build time is an estimate.
Cost: Premium Next to other LEGO sets. Check the store for today's price.
Availability: Likely retired

★★★★☆ 4.0 AI-generated review score, not a customer rating

Praise goes to the diverse mechanical models and excellent parts pack for robotics enthusiasts, though casual builders often find the specialized inventory less versatile for traditional MOCs.

📝 Our Take

RePLAY Challenge Kit 45813-1 is an essential centerpiece for competitive FIRST LEGO League teams and STEM enthusiasts. Packed with 1,600 specialized elements, this kit serves as the physical playing field and mission model arena for the 2020-2021 season, offering a masterclass in functional robotics accessories.

This set is perfect for FLL participants, educators, and Technic builders looking for bulk specialized components. The assembly of the various mission models provides a fun, collaborative engineering challenge that tests mechanical linkage design and problem-solving skills over several hours.

Skip this if you are looking for a traditional display model or a standard LEGO building experience. Because these are specialized components meant for competitive robotics and game play, casual builders might find the specialized Technic inventory less useful for standard MOC building.

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Hi! I'm BlockTalk, your LEGO expert. Ask me anything about the RePLAY Challenge Kit - building tips, investment potential, comparisons, or anything else!

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What makes the 2020 RePLAY Challenge Kit different from other FIRST LEGO League sets? Is this kit suitable for general LEGO Technic parts harvesting? How does the secondary market value of retired FLL challenge sets fluctuate? What are the most notable specialized parts included in the 1,600-piece inventory?

🧱 Building Experience

🧩

1,634

Pieces

⏱

4.5h

Estimated Build Time

📊

Advanced

Difficulty

👤

Ages

Build Highlights:

Diverse collection of mechanical mission models designed for competitive robotics challenges
Extensive use of reliable Technic beams, pins, and axles for sturdy construction
Includes specialized physical elements like the flexible zipline and exclusive RePLAY printed tiles
Encourages collaborative team-building and hands-on mechanical engineering problem solving

📈 Investment Analysis

↑ Trending up since release

Investment Grade

Retired

As a specialized educational and competitive kit from the FIRST LEGO League, the RePLAY Challenge Kit holds a unique niche on the secondary market. Because these sets are typically used heavily in classrooms and competitive environments, finding complete, well-maintained samples with all 1,600 pieces intact can be difficult for collectors. However, buyers should be aware that demand is heavily driven by educators and enthusiasts of the FLL program rather than traditional LEGO investors, which can make long-term liquidity less predictable compared to mainstream themes like Star Wars or modular buildings.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

⚖ Compare Similar Sets

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Compared to standard LEGO Technic sets or traditional retail boxes, the RePLAY Challenge Kit is fundamentally a game component system rather than a display build. While a standard Technic set like a crane focuses on a single motorized vehicle, this kit offers a wide assortment of smaller, mechanically diverse mission models similar to other annual FLL releases like City Shaper or Cargo Connect.

1 Minifigure Included

FIRST LEGO League (FLL)

3 parts

Includes a single themed FIRST LEGO League figure representing the spirit of the 2020 competition season, primarily serving as an inspirational element for the build rather than a traditional collectible minifigure.

📦 Parts Inventory

Official piece count: 1,634
Parts cataloged in this inventory: 151 unique parts, 1,597 pieces
Minifigures: 1

LEGO counts 1,634 pieces. This inventory comes from a separate parts catalog and lists 1,600, including the 3 parts inside the minifigures; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.

Missing a piece? Check this set piece by piece, with look-alike colors flagged and element IDs for replacements.

An absolute treasure trove for Technic builders, featuring massive quantities of friction pins, beams in various lengths, and specialized elements like the flexible zipline and exclusive printed tiles.

🛒 Where to Buy

eBay

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💎 Notable Parts

White Tile 2 x 2 with 'RePLAY' Print (16x)

Zipline, 22L with 2 Connectors - Flexible (23x)

Black Technic Beam 1 x 15 Thick (27x)

Medium Azure Technic Beam 1 x 7 Thick (16x)

💡 MOC Potential

🤖 Complex robotics testing arenas and automated mechanical obstacle courses

🚗 Heavy-duty industrial Technic vehicles utilizing the massive black and azure beam inventory

From the community

Community Insights

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What YouTubers Say

1 video found

BlockTalk summary

The FIRST LEGO League video demonstrates a variety of models achievable with the RePLAY Challenge Kit (45813). It serves as a visual guide showcasing the kit's potential for the FIRST LEGO League 2020/2021 season.