
Ideas further restricted submissions in 2017 by disallowing any projects based on third-party licenses already being produced by Lego, such as Star Wars and Harry Potter. Lego Ideas further restricted project submissions in June 2016 by limiting the size of the project to a maximum of 3,000 pieces, any project replicating a life-size weapon, and any project based on an intellectual property already produced as a set by Lego Ideas/Cuusoo. After sets began to be rejected with stated reasons, Lego Ideas announced restrictions on content including the use of no new part molds, banning intellectual properties owned by competing toy companies, and adult content. Originally, project submissions were allowed to be about anything and had no limits on the size and style of project. Lego Ideas later changed the threshold to include a minimum number of 100 votes in the first 60 days after submission or the project would expire, followed by a year to reach 1,000 votes, another six months to reach 5,000 votes and finally six months to reach the 10,000 supported votes. At first, projects would be kept on the Cuusoo/Ideas website for up to two years and then taken down if the project did not reach the 10,000 required votes of support. The goal of every project is to be supported by 10,000 different users, which would then make the project eligible for review. Once the page is published it is viewable to other users.

Users express their idea by combining a written description of the idea and a sample Lego model that demonstrates the concept into a project page. Process #17 is the Apollo 11 Saturn V rocket, and contains 1969 pieces, a number chosen to match the year of the first Moon landing. Titled LEGO CUUSOO, the site was labeled a beta site and remained so until the unveiling of Lego Ideas as a finished product. Lego Ideas was first introduced as an offshoot of the Japanese company CUUSOO, produced as a collaboration between CUUSOO and The Lego Group.

It started in 2008 as an offshoot of the Japanese company Cuusoo, named after the Japanese word 空想 kūsō (daydream, fantasy). Lego Ideas (formerly known as Lego Cuusoo) is a website run by Chaordix and The Lego Group, which allows users to submit ideas for Lego products to be turned into potential sets available commercially, with the original designer receiving 1% of the royalties.

Online program by Danish toy manufacturer LEGO Lego Ideas
