How many pieces does the LEGO ROBOLAB Amusement Park Set (9725-3) have?

The LEGO ROBOLAB Amusement Park Set set (9725-3) contains 306 pieces. It was released in 2005 as part of the LEGO Mindstorms theme.

How can I find missing parts for LEGO set 9725-3?

On BrickMissing you can check which parts from the LEGO ROBOLAB Amusement Park Set (9725-3) you already own. Add your LEGO collection and we'll show exactly which of the 306 pieces you're missing and which you already have.

Can I build the LEGO ROBOLAB Amusement Park Set with parts I already have?

Use BrickMissing's free parts checker to find out. Add LEGO sets you own to your collection and we'll cross-reference all 306 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO ROBOLAB Amusement Park Set from?

The LEGO ROBOLAB Amusement Park Set (9725-3) belongs to the LEGO Mindstorms theme. You can browse all Mindstorms sets on BrickMissing to find more sets from this theme.

ROBOLAB Amusement Park Set

9725-3 Mindstorms 2005 306 parts 7.4% catalog rarity Intermediate

ROBOLAB Amusement Park Set (9725-3) is a LEGO set with a listed count of 306 parts. Available inventory data is shown below.

Parts Inventory

🧱 306 parts

Showing the first 12 rows of the parts list (306 pieces in total). The full list loads automatically.

Color	Qty	LEGO price each
Black	2×	Check price → View
Blue	2×	€0,12 View at LEGO → View
Blue	4×	Check price → View
Glow In Dark Opaque	1×	Check price → View
Black	2×	€0,07 View at LEGO → View
Black	12×	Check price → View
Black	2×	€0,38 View at LEGO → View
Light Bluish Gray	2×	€0,21 View at LEGO → View
Dark Bluish Gray	2×	Check price → View
Blue	1×	Check price → View
Light Bluish Gray	2×	Check price → View
Red	2×	€0,22 View at LEGO → View

I already have an account

Catalog rarity

How common are the parts in ROBOLAB Amusement Park Set?

7.4%Moderate rarity

more commonless common

7 of 94 recorded part+color combinations appear in 3 or fewer sets in our catalog. This does not measure replacement availability or price.

Theme average

2.9%

All sets

6.7%

Least common in our catalog

Motor Pulley, 9V Micromotor · Light Bluish Gray · only this set in our catalogSensor, Touch · Light Bluish Gray · only this set in our catalogWire · Black · 2 sets in our catalog

How we calculate this →