The Lego Ideas Building Contest was a contest on Roblox that started on June 7, 2014 and ended on July 18, 2014.
On June 7, 2014 Roblox announced on a blog post
that they were hosting a contest called the LEGO Ideas Building Contest. Users were supposed to come up with a concept for a LEGO Set, build and photograph their creation and then submit their project to Roblox. The winners would all receive a Red Builder's Top Hat
In order for users to enter the contest first they had to create a LEGO set ROBLOX themed. Afterwards they had to photograph the LEGO set and then submit it on this website
The winners were announced on August 20, 2014 on a blog post.