LEGO Ideas Review: Fan Designs and Collector Value
The short version first: Ideas is the most idea-dense theme LEGO makes, and it suits collectors who chase unusual subject matter. It is not a safe bet for anyone hoping to treat sets as an investment with guaranteed returns.
Of all the LEGO lines, Ideas is the odd one out — every set in it started life as an ordinary fan's MOC submission. In this review we look at whether this fan-decided product line is worth your money, and at the selection process behind it, which is strict to the point of being punishing.
Fan Submissions and the 213xx Numbering System
LEGO Ideas began as the CUUSOO platform, which launched in 2011. The rule was simple: a builder uploads an original design, and once it collects 10,000 supporter votes it goes to an official review. Only projects that clear that review have a chance of reaching mass production. The mechanism naturally filters for ideas with a built-in audience, which is why sets under the 213xx numbering arrive with nostalgia already attached. Be aware that the acceptance rate is extremely low — over a decade, thousands of submissions have turned into only a few dozen retail sets — and that the official version almost always adds a large amount of brick volume and reworks the structure. The final product is usually more polished than the original submission, but also more expensive.
Standout Sets: 21318 Tree House and Other Classics
21318 Tree House is the milestone no discussion of Ideas can avoid. With 3036 pieces, three detachable treehouse rooms and a modular design that lets you swap foliage between spring, summer and autumn colour schemes, plus lived-in details like bunk beds and a fireplace, it gives "toys for adults" a genuine sense of domestic life. In the same line, 21309 Saturn V uses 1969 pieces to recreate the three-stage structure and can be broken down into two boosters — a benchmark that works equally well as a teaching model and as something to handle. 21335 Motorized Lighthouse and 21343 Viking Village represent two further directions: mechanical interaction and scene reconstruction. Overall, Ideas allows noticeably more design freedom than a regular theme, with SNOT techniques and unusual part combinations turning up constantly, so it suits builders with some experience.
Collecting and Retired-Set Value
Be clear-eyed about the value of retired Ideas sets. Discontinued models do rise in price — early releases such as 21303 Wall-E and 21310 Old Fishing Store now fetch double — but not every set holds its value, and niche subjects can flatline just as easily. Put "I like it" ahead of "it will appreciate": most Ideas sets are a one-time release, so if you miss one you are waiting for a reissue or buying secondhand. If a set appeals to you and the budget allows, buying while it is still on shelves is the more dependable choice.
Verdict and Advice
The conclusion of this LEGO Ideas review: it is the most idea-dense LEGO theme, well suited to collectors who love distinctive subjects, and poorly suited to a speculative mindset chasing guaranteed returns. If your budget is limited but you enjoy tinkering, head to brickplan and look for MOC instructions on the same subject — plenty of classic ideas can be rebuilt at home for far less.
FAQ
Q: Is LEGO Ideas worth buying? A: It is the most idea-dense LEGO theme, suited to collectors who enjoy distinctive subjects, but not to anyone treating sets as a guaranteed-appreciation investment. Every set comes from a fan MOC submission, so nostalgia is built in.
Q: How does the Ideas selection process work? A: A builder uploads an original design, and once it reaches 10,000 supporter votes it enters official review; only projects that pass can be produced. The acceptance rate is extremely low — thousands of submissions over a decade, only a few dozen sets — and the final product reworks the structure substantially.
Q: Which Ideas sets are the most iconic? A: 21318 Tree House is the milestone: 3036 pieces, three detachable treehouse rooms, and foliage you can switch between spring, summer and autumn. 21309 Saturn V recreates the three-stage rocket in 1969 pieces and splits into two boosters, making it both educational and playable.
Q: Do retired Ideas sets always go up in value? A: No. Discontinued models do rise, and early sets like 21303 Wall-E and 21310 Old Fishing Store have doubled, but niche subjects can flatline too. Put preference ahead of appreciation — if you want a set and have the budget, buy it while it is still in production.