Rebrick was an official LEGO contest platform and was formerly also a social platform for sharing LEGO creations. It hosted eleven brickfilm-specific competitions beginning in 2012. In 2018, it went offline to be superseded by contests on LEGO IDEAS.
ReBrick Flick Halloween Competition
On September 25, 2012, it was announced that ReBrick would be hosting its first ever video competition, which would have a Halloween-related theme. The rules of the ReBrick Flick Halloween Competition were posted on October 1. The theme was "spooky fun" and the contest was open to everyone 16 and over with a ReBrick account. Non-LEGO elements were not permitted and there was a time limit of 3 minutes. The deadline was October 29.
The five entries that received the most likes from ReBrick users were then evaluated by a panel of judges based on creativity, originality and theme. The prize for the one winner was the LEGO set 10228 Haunted House signed by LEGO designer Adam Grabowski, as well as a LEGO Monster Fighters grab bag including 40076 Zombie Car, 30201 Ghost, 850487 Halloween Accessory Set and the Monster Fighters keyrings Ghost, Monster and Lord Vampyre.
- Monster in the Closet - James Morr
The LEGO Movie ReBrick Film Competition
The second ReBrick brickfilm competition offered entrants a chance to get their brickfilm included in The LEGO Movie. It was announced on March 18, 2013, and entries were accepted from March 25. The goal was to create a 15 - 30 second animation showing a character taking something apart and reconstructing it into something new that could help defeat a bad guy. Clips were required to use the setting of an existing LEGO line (excluding licensed lines), be shot at 3.2 megapixels or above and shot at a framerate compatible with a 24fps output. Entrants had to be 16 or older and the deadline was May 6.
The 25 entries with the most likes on ReBrick were then judged by a panel including North American Community Coordinator at the LEGO Group Kevin Hinkle, The LEGO Movie directors Phil Lord and Chris Miller, and co-director Chris McKay. The prizes for first place were a feature during a scene in The LEGO Movie, a trip to Warner Brothers Studios with a tour for 2, a trip to meet the directors of the movie to take part in a LEGO build, a customized engraved LEGO ticket to The LEGO Movie designed and built by the official LEGO model shop and the full range of sets from the film when available, signed by the designers. The prizes for second were a trip to Warner Brothers Studios with a tour for 2 and the signed full range of the film's sets, and the prize for third was the signed full range of the film's sets. The winning entries were:
- Gorgy wants a Horse - Kevin Ulrich
- Garbage Man - David Pagano
- Unity is strength - Pedro Sequeira and Guilherme Martins
ReBrick Show Us an AFOL Competition
The third ReBrick brickfilm contest was announced on the 1st of August 2013. The aim was to produce a film showing "what it means to be an AFOL". It was tied in with the film , which was then in production. The winner of the contest, or a selection of entries, would be considered for inclusion in this film. The deadline of the contest was August 30 and entries were required to be 2 minutes or less.
The judges of the contest were Online Community Lead Peter Espersen and the directors of A LEGO Brickumentary. The judging criteria were creativity, originality and theme. The winner would receive  which was LEGO Brick Blues by David Boddy.signed by designer Jamie Berard, the chance to have the film featured in A LEGO Brickumentary and the chance to be commissioned for further animation for this film. Originally, there was to be one grand prize winner and one second place winner. However, when the results were announced on September 16, only a grand prize winner was announced,
LEGO Stop-Motion Dream Race
The fourth Rebrick brickfilm competition was launched alongside the site's redesign on March 3 2016. It was tied in with the theme and was sponsored by Porsche. A promotional brickfilm, produced by Kevin Ulrich was released alongside the contest. The contest's aim was to produce a brickfilm which would "continue" this film. Entries were required to be between 15 seconds and 1 minute in length. The deadline was the 2nd of May 2016. The contest received 37 entries, excluding one duplicate. The results were announced on the 4th of June, first at Steinerei 2016 and then later online.
The judging panel consisted of Design Manager Specialist for LEGO Speed Champions Craig Callum, Porsche Marketing Manager Sebastian Hornung and Kevin Ulrich. The judging criteria were "Overall coolness and originality, Best integration of LEGO humor, Best integration of Porsche brand design and Best use of LEGO elements", each weighted at 25%. One grand prize winner and two runner-up prize winners were chosen. The grand prize was two VIP tickets to the and the full 2016 range of Speed Champions sets. The runner-up prizes were the full 2016 range of Speed Champions sets and a die-cast model of a Porsche 919.
- Night Stint - Nikola Vulovic
The Greatest Villain of All Time in Ninjago
The fifth Rebrick brickfilm contest was launched in May 2016, with a deadline of August 11. The theme called for films centred around existing or original villains from the  123 submissions were received, which includes an unknown number of duplicates.theme, with a time limit of one minute.
There was a total of 6 winners. Each received the runner-up prize,  and was announced on the 19th of September.signed by the designer. One winner additionally received the grand prize, which included a trip to LEGOLAND Billund, a tour of the new Ninjago section of the park and a meeting with one of the Ninjago designers. The winner was selected from the six finalists by a public vote
The winner and runners up were:
- Master of Shadows - Peter Dickerson and Jack Nop
LEGO Batman Movie Brick Films
The sixth Rebrick brickfilm contest was launched in November 2016 with a deadline of January 5, 2017 and was tied in with The LEGO Batman Movie. The theme called for brickfilms between 15 and 30 seconds in length which feature Batman defeating a villain, either existing or original. 602 entries were recorded, which includes an unknown number of duplicates.
The contest was judged by a panel from Warner Bros and The LEGO Batman Movie design team. The judging criteria were LEGO Batman humor, Creativity in LEGO Builds, Attention to LEGO Batman and villain story line and Focus on the overall look and feel of the movie, each weighted at 25%. The results were announced (after two delays) on February 16, 2017. There were three grand prize winners and three runner-up winners. The grand prize winners had their brickfilm included on the LEGO Batman Movie DVD and additionally received a full range of LEGO Batman Movie sets (13 total), a plate with a Batman minifigure autographed by Will Arnett, a plate with a Joker minifigure autographed by Zach Galifianakis, and The LEGO Batman Movie on Blu-Ray. The runner-ups received, , , , a plate with a Batman minifigure autographed by Will Arnett, a plate with a Joker minifigure autographed by Zach Galifianakis and The LEGO Batman Movie on Blu-Ray.
The Grand Prize and Runner Up winners were:
- Harley Quinn Robs a Gotham Bank - Dominik Skarbek-Kruszewski
- Two Face Chase - Tom Sullivan
- Frosted Pie - Costin Modoianu
Build and Rebuild
The seventh Rebrick brickfilm contest was launched around January 9, 2017. The deadline was March 24. (At launch, it was listed variably as either March 22 or 24.) It called for videos showing a model being built from a 3-in-1 set through stop-motion. Entries were required to be between 15 and 45 seconds in length. 130 entries were recorded.
The contest was aimed exclusively at stop-motion and did not permit CG entries. Any sound which was included was required to be entirely self-created. No LEGO parts beyond those included in the selected Creator 3-in-1 set were to be used. The contest will be judged by a panel from the Creator team. The judging criteria will be Overall coolness and originality in video entry, Most inspired details in video entry, Attention to contest theme and Best use of LEGO elements, each weighted at 25%. The results were announced on April 19.
One grand prize winner and two runner-up winners were selected. Each received the sets, , , , , , , , , and . The grand prize winner additionally received a LEGO Creator t-shirt and "some exclusive LEGO Creator goodies".
The Grand Prize and Runner Up winners were:
- Super Soarer Rad Robot - Buster Haus
Ninja for a Day
The eighth Rebrick brickfilm contest was launched around April 4, 2017. The deadline was May 10. It is tied in with The LEGO Ninjago Movie. The aim of the contest was to "create a 15 second to 30 second LEGO stop-motion brickfilm that will depict a snapshot in the life of Ninjago city", with attention being paid to rebuilding after an attack. 565 entries were recorded, including an unknown number of duplicates.
There were six Grand Prize Winners, each of whom would have the chance for their brickfilm to feature in The LEGO Ninjago Movie. They also received the full range of LEGO Ninjago Movie sets, one exclusive LEGO Ninjago mystery set valued at $300, the Art of the Movie book signed by the filmmakers and signed LEGO minifigures from the movie. When the contest results were announced, an additional five Bonus Winners were included with the previously scheduled six. These five would also have the chance for their entry to be featured in The LEGO Ninjago Movie. The film Ninsure was originally chosen as one of the six Grand Prize winners, but could not be confirmed due to "email complications". It was later added as a sixth Bonus Winner.
The judging criteria were Ninjago action and humor, Overall Ninjago Movie look and feel, Coolness and originality of your story and Most inspiring builds and rebuilds, each weighted at 25%. The contest was judged by a panel from the LEGO Ninjago and Warner Bros. team. The results were announced on the 20th of June.
The Grand Prize and Bonus winners were:
- CATastrophe in Ninjago City - "pantsahat"
- Kai's Mucky Mech - "Lego Elephant Studios"
- Don't Forget the Popsicle! - Christopher Gearhart
- Good Citizen Kai - Rafael Figueroa
- A Day at Work - Johnathan Rabon
- Snapshot of a Ninja - "If You Build It"
A LEGO House Dream
The ninth Rebrick brickfilm contest began on September 28, 2017. It was tied in with the opening of the LEGO House. The deadline was variably listed as November 3 or November 10, later clarified to be the 3rd. The theme of the contest was to show "your idea of a day at the LEGO House". 108 entries were recorded.
There was one Grand Prize Winner and two Runner Up Winners. All received, signed by the designer. The Grand Prize Winner also received transportation and lodging for two to Billund, Denmark, with tickets to the LEGO House, in Spring 2018.
Entries were required to be between 15 and 30 seconds in length. The contest was judged by a panel of judges from the LEGO House team and guest judge Carlos Rui Ribeiro. The judging criteria was Use of LEGO humor, Relevance to contest theme, Best use of LEGO elements and Coolness and originality of your story, each weighted at 25%.
The Grand Prize and Runner Up winners were:
- LEGO House Dream Adventure - "If You Build It"
Be An Expert Rebuilder
The tenth Rebrick brickfilm contest began around November 22, 2017 with a deadline around early January 2018. The theme of the contest was to show an animated rebuild of a Creator Expert Modular, Fairgrounds, or Holiday set. Despite being a stop-motion contest, the focus was purely on the rebuild, as opposed to making a film. The maximum time limit was 30 seconds.
76 entries were recorded. The results were announced on January 29, 2018. There was one grand prize winner and two runner-up winners:
- Bump and Go Cars - "Magic Josh"
Continue the Chase
The eleventh Rebrick brickfilm contest began around January 23, 2018. Entries were required to depict a continuation of a Ninjago-themed brickfilm which was presented with the contest. The deadline was March 15 and entries were required to be 15 to 30 seconds. 225 entries were recorded.
There were a total of five Grand Prize winners, one in each of the categories of Best Brickfilm, Funniest Moment, Best Stunt, Best Fight Scene, and Viewers' Choice. The judging criteria were Overall coolness and originality, Video Quality, Relevance to listed categories and Most inspired details, each weighted at 25%. The Viewers' Choice vote was held through the LEGO Life app. 10-15 entries were pre-selected to be voted on by LEGO Life users. The results were announced on April 9.
The prize package for the five winners consisted of, , , , , , , , , , , a winner’s certificate, a customized winner’s trophy from a LEGO NINJAGO designer, a LEGO NINJAGO swag package and an upcoming Ninjago set, to be released in Summer 2018.
- Jay wins A Mr.E Prize - Aaron "brickninjastudios" Paben
- The Surprise Biker - "GDS Studios"
- Insane Zane! - Adrián Piqueras
Best Fight Scene:
- Vengeful Duel - "Electroknight Productions"
- A Myster"E"Ous End! - "mickeyD0715"/"08snapshot"
- The Rebrick website in July 2018
- Announcment of the first ReBrick video contest
- ReBrick Flick Halloween Competition rules
- Halloween Competition winner announcement
- Halloween Competition finalists
- Rules PDF of The LEGO Movie competition
- Announcement of The LEGO Movie ReBrick Film Competition
- The LEGO Movie ReBrick Film Competition results
- Credits of The LEGO Movie on IMDB. (Frank Leung and Cyrus Yeung credited as "Cyrusfrank Eung")
- Announcement of the Show Us an AFOL competition (redirects away due to poor scripting)
- Announcement of the winner of the Show Us an AFOL competition
- The promotional film for the LEGO Stop-Motion Dream Race contest
- LEGO Stop-Motion Dream Race contest page
- Results to be announced at Steinerei 2016
- LEGO Stop-Motion Dream Race winners
- The Greatest Villain of All Time in Ninjago contest page
- The 6 finalists of the Greatest Villain contest, displayed for voting
- LEGO Batman Movie Brick Films contest page
- Build and Rebuild contest page
- Ninja for a Day contest page
- Ninsure on YouTube
- A LEGO House Dream contest page
- Be An Expert Rebuilder contest page
- Continue the Chase contest page