The year 2019 is already 2 months behind us. I wanted to take a final look back on the year. Nathan already wrote a blog on stuff that was going on from the developer and admin side of the site, like traffic, new features etc. JaredHinton wrote a blog on the admin's favorite sets of the year. I want to take a look at a very import aspect of Rebrickable: YOU. Without you, Rebrickable wouldn't exist. We count on you to submit and build MOCs, and help us keep the database up-do-date and correct errors. 2019 has been the busiest year for the admin team. With the help of some graphs and numbers, I want to show how much you all have helped us.

MOC Submissions

We had a record amount of MOCs submitted in 2019, nearly double compared to 2018, with 7043 MOCs in total. After a dip in April, the MOC submissions have been climbing through the year.
The MOC fans have been active as well. In total, 5,400+ Fan Photos have been submitted in 2019.

One way to see how popular MOCs are, is by looking at the number of Likes a MOC gets. Below is a list of the most liked MOCs of 2019, and a list of most liked MOCs ever.

Top 10 MOC Likes for 2019
1 MOC-22970 - Ford Mustang Hoonicorn V2
Designer: Loxlego
Published on Mar 13 2019
2 MOC-20920 - RC Liebherr LTM11200
Designer: Jeroen Ottens
Published on Jan 09 2019
3 MOC-25280 - Hogwarts Castle Architecture
Designer: MOMAtteo79
Published on May 28 2019
4 MOC-23556 - ISD Monarch
Designer: onecase
Published on Mar 31 2019
5 MOC-27092 - Tatra T813 8x8 PROFA
Designer: Madoca1977
Published on Aug 05 2019
6 MOC-25520 - Dacoma 4x4 Redux
Designer: Madoca1977
Published on Jun 06 2019
7 MOC-26457 - Apollo Spacecraft
Designer: FreakCube
Published on Jul 11 2019
8 MOC-14608 - Articulated SW AT-ST ("Chicken Walker") v3.0
Designer: gol
Published on May 10 2018
9 MOC-30884 - Hogwart's Castle (71043) Epic Extension
Designer: Playwell Bricks
Published on Nov 01 2019
10 MOC-32898 - 10265 Mustang Shelby GT500 B model
Designer: firas_legocars
Published on Dec 18 2019
Top 10 MOC Most Likes Ever
1 MOC-9018 - Moderately Sized ISD with Full Interior
Designer: raskolnikov
Published on Jul 25 2017
2 MOC-5360 - Avtoros Shaman 8x8
Designer: Madoca1977
Published on Aug 09 2016
3 MOC-6006 - Plus-Size AT_AT
Designer: raskolnikov
Published on Nov 21 2016
4 MOC-16915 - McLaren P1 hypercar 1:8 - manual version only -
Designer: brunojj1
Published on Aug 17 2018
5 MOC-8863 - Jeep Wrangler
Designer: Madoca1977
Published on Jul 12 2017
6 MOC-11989 - 10214 Tower Bridge Alternative build
Designer: InyongBricks
Published on Jan 06 2018
7 MOC-4562 - ICARUS Supercar
Designer: Madoca1977
Published on Mar 12 2016
8 MOC-10219 - Efferman's Vertical Stand for Millennium Falcon 75192
Designer: Lucioswitch81
Published on Oct 11 2017
9 MOC-15881 - Executor class Star Dreadnought
Designer: onecase
Published on Jul 14 2018
10 MOC-1389 - Wing Body Truck
Designer: Madoca1977
Published on Mar 26 2014

Because a MOC submitted in January of course had more time to receive likes than a MOC submitted in December, I've made an alternative list, listing the MOCs with most likes received within 28 days after submission.

Top 10 MOC likes within 4 weeks
1 MOC-22970 - Ford Mustang Hoonicorn V2
Designer: Loxlego
Published on 2019-03-13
2 MOC-20920 - RC Liebherr LTM11200
Designer: Jeroen Ottens
Published on 2019-01-09
3 MOC-20674 - MOC - McLaren P1 hypercar 1:8 - RC version only -
Designer: brunojj1
Published on 2019-01-02
4 MOC-27092 - Tatra T813 8x8 PROFA
Designer: Madoca1977
Published on 2019-08-05
5 MOC-25520 - Dacoma 4x4 Redux
Designer: Madoca1977
Published on 2019-06-06
6 MOC-22101 - Brick Square Post Office
Designer: Bricked1980
Published on 2019-02-14
7 MOC-30884 - Hogwart's Castle (71043) Epic Extension
Designer: Playwell Bricks
Published on 2019-11-01
8 MOC-26457 - Apollo Spacecraft
Designer: FreakCube
Published on 2019-07-11
9 MOC-26511 - 1971 Nissan 240Z Fairlady - Alternate build of 42056 Porsche 911 GT3 RS
Designer: Pleasedontspammebro
Published on 2019-08-01
10 MOC-31327 - Vintage Monster Truck
Designer: Madoca1977
Published on 2019-11-14

Another way to look at MOCs is the number of times the MOC is downloaded. Unfortunatly, we don't have control over the number of downloads for instructions that are hosted externally, only for Rebrickable-hosted. So a list of top 10 downloads would say little. What I can list, is the number of times users used the build-calculation to see if they have all the parts needed, indicating the have an interest in building it. Sets are also included in this list.

Top 10 Calculated MOCs and Sets - All Time
1 MOC-0580 - Land-Rover Defender 110
Designer: Sheepo
133668 Builds
Published on Feb 23 2013
2 MOC-0853 - Ultimate 42009
Designer: JurgenKrooshoop
107686 Builds
Published on Aug 25 2013
3 MOC-0080 - Ultimate 8043
Designer: JurgenKrooshoop
66706 Builds
Published on Jun 11 2012
4 8258-1 - Crane Truck 60263 Builds
5 10179-1 - Millennium Falcon - UCS 51310 Builds
6 8043-1 - Motorized Excavator 45530 Builds
7 127-1 - Train Set 39172 Builds
8 MOC-0143 - Girls Tank
Designer: Mahj
37547 Builds
Published on May 22 2012
9 MOC-1389 - Wing Body Truck
Designer: Madoca1977
37393 Builds
Published on Mar 26 2014
10 1371-1 - Spinosaurus Attack Studio 33636 Builds
Top 10 Most Calculated MOCs and Sets - 2019
1 MOC-20674 - MOC - McLaren P1 hypercar 1:8 - RC version only -
Designer: brunojj1
2774 Builds
Published on Jan 02 2019
2 MOC-20920 - RC Liebherr LTM11200
Designer: Jeroen Ottens
1588 Builds
Published on Jan 09 2019
3 MOC-22970 - Ford Mustang Hoonicorn V2
Designer: Loxlego
1272 Builds
Published on Mar 13 2019
4 MOC-23104 - ISD Intimidator 77525
Designer: CharlesRAnderson
1242 Builds
Published on Mar 19 2019
5 MOC-23556 - ISD Monarch
Designer: onecase
1116 Builds
Published on Mar 31 2019
6 MOC-25520 - Dacoma 4x4 Redux
Designer: Madoca1977
1023 Builds
Published on Jun 06 2019
7 MOC-27092 - Tatra T813 8x8 PROFA
Designer: Madoca1977
817 Builds
Published on Aug 05 2019
8 MOC-28316 - ULTIMATE 42099 MOC by Effermann
Designer: CustomBricks.de
757 Builds
Published on Aug 22 2019
9 MOC-29848 - Tow Truck MkII
Designer: Lucioswitch81
752 Builds
Published on Sep 29 2019
10 42099-1 - 4x4 Extreme Off-Roader 724 Builds

And of course a list of most active submitters can't be missed here.

Most MOCs submitted
1 Moc LEGO 350 MOCs
2 Keep On Bricking 325 MOCs
3 HunterBuilds 131 MOCs
4 LegoOri 127 MOCs
5 drosse 100 MOCs
6 gabizon 99 MOCs
7 Johnni D 96 MOCs
8 Kirvet 93 MOCs
9 t77 84 MOCs
10 XperiMent 84 MOCs

Set Submissions

Each year, LEGO produces new sets. We are also missing sets from older years. So we need a continuous flow of set submissions to stay up-to-date. In June, Simon published a review, in which he also talked about the possibility to submit B-models and sub-sets. That got a great response. We were flooded with submissions. In the graph below you see the set submissions of 2019, split into set-types. Below that, is a total submission amount by year.

And who are all these people who submitted this record amount? Here is a top 10 of set submitters (regardless of set-type). Disclaimer: JaredHinton, Simon and me (TobyMac) shouldn't be counted, as it's our job to add new sets.

Top Set Submitters 2019
1 jjsiemens 637
2 Sletschin 614
3 TobyMac 327
4 jaredhinton 256
5 TurboRatRods 222
6 astrowob 149
7 Simon 114
8 se1977 63
9 Heaventree 51
10 vinternet 27

Side-note: As you see, 2019 was technically not a record-breaking year here. There were more submissions in 2013 and 2014. But these can be shoved under the category 'start-up submissions'. In the starting years of Rebrickable, there were simply many more sets to be added. The top 6 set-submitters for those years are all admins, so correcting for that, 2019 was the biggest in user submissions:

Top Set Submitters 2013/2014
1 theskirrid 2087
2 DwBrick 1437
3 Nathan 1017
4 jantjeuh 896
5 sheo 533
6 Rebrickable (bot) 390

Sets Owned

JaredHinton wrote about the admin's most favorite sets of 2019. But what was your favorite set? The easiest way to see that, is look at the number of users that have a set in their set-list. (I know, this is not a perfect measure. You might like a set very much, but not have the budget/room to buy it, so it's not in your set list. But this is the best I can do with our numbers.) This is the top 25 of 2019 sets, and the top 25 of all sets:
Note: I was also curious about all other years, so I made a list of them too. Since that would be a long scroll here in the blog, I made a separate page for it here.

Top 25 sets of 2019
1 - 42095-1 Remote-Controlled Stunt Racer
Total: 3474 sets
Theme: Technic
2 - 10265-1 Ford Mustang
Total: 3441 sets
Theme: Creator
3 - 70841-1 Benny's Space Squad
Total: 3296 sets
Theme: The LEGO Movie
4 - 42093-1 Chevrolet Corvette ZR1
Total: 3266 sets
Theme: Technic
5 - 42096-1 Porsche 911 RSR
Total: 2980 sets
Theme: Technic
6 - 31088-1 Deep Sea Creatures
Total: 2694 sets
Theme: Creator
7 - 75892-1 McLaren Senna
Total: 2649 sets
Theme: Speed Champions
8 - 10266-1 NASA Apollo 11 Lunar Lander
Total: 2354 sets
Theme: Creator
9 - 75890-1 Ferrari F40 Competizione
Total: 2270 sets
Theme: Speed Champions
10 - 42088-1 Cherry Picker
Total: 2156 sets
Theme: Technic
11 - 75891-1 Chevrolet Camaro ZL1 Race Car
Total: 2015 sets
Theme: Speed Champions
12 - 42094-1 Tracked Loader
Total: 1933 sets
Theme: Technic
13 - 10264-1 Corner Garage
Total: 1852 sets
Theme: Modular Buildings
14 - 42110-1 Land Rover Defender
Total: 1852 sets
Theme: Technic
15 - 75895-1 1974 Porsche 911 Turbo 3.0
Total: 1688 sets
Theme: Speed Champions
16 - 40335-1 Space Rocket Ride
Total: 1660 sets
Theme: LEGO Ideas and CUUSOO
17 - 75258-1 Anakin's Podracer - 20th Anniversary Edition
Total: 1633 sets
Theme: Star Wars
18 - 75259-1 Snowspeeder - 20th Anniversary Edition
Total: 1630 sets
Theme: Star Wars
19 - 42099-1 4x4 X-treme Off-Roader
Total: 1595 sets
Theme: Technic
20 - 60223-1 Harvester Transport
Total: 1591 sets
Theme: City
21 - 75262-1 Imperial Dropship - 20th Anniversary Edition
Total: 1563 sets
Theme: Star Wars
22 - 60239-1 Police Patrol Car
Total: 1559 sets
Theme: City
23 - 42098-1 Car Transporter
Total: 1518 sets
Theme: Technic
24 - 75228-1 Escape Pod vs. Dewback Microfighters
Total: 1514 sets
Theme: Star Wars
25 - 75261-1 Clone Scout Walker - 20th Anniversary Edition
Total: 1498 sets
Theme: Star Wars
Top 25 sets of All Time
1 -42043-1 Mercedes Benz Arocs 3245
Total: 14911 sets
Theme: Technic
2 -42009-1 Mobile Crane MK II
Total: 14325 sets
Theme: Technic
3 -42030-1 Remote-Controlled Volvo L350F Wheel Loader
Total: 13384 sets
Theme: Technic
4 -42055-1 Bucket Wheel Excavator
Total: 11429 sets
Theme: Technic
5 -42056-1 Porsche 911 GT3 RS
Total: 10960 sets
Theme: Technic
6 -10220-1 Volkswagen T1 Camper Van
Total: 10799 sets
Theme: Creator
7 -9398-1 4 x 4 Crawler
Total: 10594 sets
Theme: Technic
8 -10243-1 Parisian Restaurant
Total: 9954 sets
Theme: Modular Buildings
9 -21309-1 NASA Apollo Saturn V
Total: 9792 sets
Theme: LEGO Ideas and CUUSOO
10 -8110-1 Unimog U400
Total: 9638 sets
Theme: Technic
11 -8043-1 Motorized Excavator
Total: 9366 sets
Theme: Technic
12 -10218-1 Pet Shop
Total: 8155 sets
Theme: Modular Buildings
13 -10232-1 Palace Cinema
Total: 8119 sets
Theme: Modular Buildings
14 -8293-1 Power Functions Motor Set
Total: 8057 sets
Theme: Power Functions
15 -10246-1 Detective’s Office
Total: 7875 sets
Theme: Modular Buildings
16 -42082-1 Rough Terrain Crane
Total: 7578 sets
Theme: Technic
17 -42054-1 CLAAS XERION 5000 TRAC VC
Total: 7477 sets
Theme: Technic
18 -42065-1 RC Tracked Racer
Total: 7367 sets
Theme: Technic
19 -42039-1 24 Hours Race Car
Total: 7181 sets
Theme: Technic
20 -42078-1 Mack Anthem
Total: 7148 sets
Theme: Technic
21 -21108-1 Ghostbusters Ecto-1
Total: 7120 sets
Theme: LEGO Ideas and CUUSOO
22 -75105-1 Millennium Falcon
Total: 6971 sets
Theme: Star Wars
23 -42006-1 Excavator
Total: 6617 sets
Theme: Technic
24 -42042-1 Crawler Crane
Total: 6570 sets
Theme: Technic
25 -10251-1 Brick Bank
Total: 6354 sets
Theme: Modular Buildings

Part Submissions

Sets need parts. On that front, we have a small decline in submissions against 2018. The gap can explained by the actions of JaredHinton. In 2018, he started adding all missing Duplo sets. With this task, he also submitted around 1000 parts. Seen against the years outside 2018, 2019 is again record-breaking. The top 10 of part submitters:

Top Part Submitters 2019
1 Rebrickable (bot) 1776
2 TobyMac 556
3 jaredhinton 342
4 Sletschin 263
5 thea 161
6 meregt 84
7 Arconoide 75
8 hallafors 60
9 Odurt 23
10 jjsiemens 23

It's hard to find a part, when the part has no image. In 2017, Rebrickable introduced the possibility to upload photos for parts. In 2019, we're close to the amount of approved submissions of 2018.

Change requests

No database is 100% error-free. To help us get closer to that 100%, you can submit Change Requests. And here too, you have been submitting in record number! August was our busiest month this year.
Note: I've excluded rejected Change Requests. Those were about 7% of the total submissions, steady over all years.

And like the set submissions, I have a top 10 list of people that have kept us busy in 2019. In total, 417 different users have submitted 1 or more Change Requests.

Top 10 CR Submitters in 2019
1 Sletschin 2503
2 xilanium 555
3 Lucky-Ramses 387
4 SimLego2016 194
5 nathy10g9 153
6 astrowob 123
7 Odurt 106
8 TobyMac 72
9 antant7 72
10 meregt 64

Your voice

You've been talking a lot too last year, with a record of 24494 comments on MOCs, sets and blogs/reviews.

Thank YOU

As said above, this site couldn't exist without your help. So thank you for all you contributions in 2019. We hope to see you in 2020 too!
Keep building!


  • 3 weeks, 2 days ago antares Level 21
    Big thx for this fine Article. Wow 2019 was a Busy-Year, and you have all done or fixed, great thank to you!
  • 1 month, 2 weeks ago fpallas Level 9
    Muchas Gracias a todos los que exponeis vuestros modelos en Reblicable, para que los demás podamos montarlos, ya sea haciendo series de fotos o en pdf.
    Soy un jubilado de 69 años que disfruto montando modelos de technik
    Imagino el tiempo que lleva, el hacer las instrucciones, en algunos casos, posiblemente más que diseñar el modelo.
    Y a TobyMac i sus colaboradores les estoy muy agradecido, por mantener esta web, que ya casi es imprescindible para mí.
    Saludos a todos
    • 1 month, 2 weeks ago TobyMac Level 33 Inventory Admin ADMIN
      Para ser claros: Nathan es el creador de Rebrickable. Solo soy un administrador y blogger.
      • 1 month, 2 weeks ago fpallas Level 9
        De todos modos gracias a Nathan a ti y a todos vosotros, pues estáis haciendo un buen trabajo para los demás.
  • 1 month, 2 weeks ago fredleg Level 18
    Thank you a lot for this article, and thank you a lot for rebrickable! Now I can't do without it, definitively. I have a little suggestion: in addition to the "Most MOCs submitted" table, it would be interesting to get a table that highlights not only the number of MOCs but their size in number of pieces. For example by multiplying the number of MOCs by the number of pieces, so that a designer who proposed 100 MOCs of 100 pieces each would be at the same level as a designer who proposed 10 MOCs of 1000 pieces each. For a future post?
  • 1 month, 2 weeks ago fergs Level 9
    I am a newbie to the Lego community. In December I bought the 42024 Technic set as a Christmas present to my Grandson, he's only 7 so I thought I'd build it before handing it over. I loved it so much I bought the same set for myself. Last year I was devastated at having to take early retirement due to ill health. My doctor suggested taking up a hobby to take my mind off the inevitable, and my Grandson said Lego was the 'cool' option. NOW I'M WE'RE HOOKED !!
    I found this site when searching the net for MOC's. It's awesome. I'm on here every day and spend hours building and taking apart models. I only have 3 sets and therefore limited to what I can build. The feature where you can find what models you can build is not only, in my opinion, the best feature on this site, but the best feature on the internet !!
    I would like to thank all the Designers for sharing their thoughts, designs and plans with us less experienced builders, but most of all I would like to personally thank you TobyMac (and the team) for bringing Rebrickable to the public domain. You have given me a chance to make some marvelous memories with my Grandson. I am so glad to see that the site goes from strength to strength.
    • 1 month, 2 weeks ago TobyMac Level 33 Inventory Admin ADMIN
      Thanks! And building together is agreat way to connect with someone. 
      To be clear: Nathan is the creator of Rebrickable. I'm just an admin and blogger.
  • 1 month, 2 weeks ago ilyabuilder724 Level 17 MOC Designer
    Really liked the article. And i glad that rebrickable grows this fast.
  • 1 month, 2 weeks ago BennyBenster Level 8 MOC Designer DESIGNER
    What is the difference between a set a subset and a bmodel ? Thanks !
    • 1 month, 2 weeks ago TobyMac Level 33 Inventory Admin ADMIN
      I could swear I answered this this morning, but I can't find the reply anymore.
      A sub-set is a smaller part of the complete set. For instance, some Speed Champions come with 2 cars. Each car can be submitted as a sub-set.
      A b-model is an official design by LEGO that can be build with the set. When a MOC design uses only the parts of 1 set, it's called an Alternate, also sometime referred to as c-model. The difference is the designer.
      If a b-model consists of multiple builds, it can also be split up into sub-sets...
    • 1 month, 2 weeks ago BennyBenster Level 8 MOC Designer DESIGNER
      Thanks !
  • 1 month, 2 weeks ago WilliamMcGinnis Level 7
    I've been collecting Lego since the mid 80s, and I found Rebrickable about 2 years ago, looking at MOCs. I thought it was neat and would come back every now and then to browse, never looking any deeper into what this database actually was. When I realized that personal inventory was possible, I immediately created an account and got to work. It's been about 2 months, and with hundreds more sets and thousands of parts to go, I'm no where even close to done. This thing you've created is incredible. I'm rather in awe of its scale and complexity, and I'm still scratching at the possibilities. Thank you all for the long and often overlooked hours you have put into this. I'm honored to now be a part of it.
  • 1 month, 2 weeks ago veyniac Level 17 MOC Designer PRO
    How many MOC instructions were sold last year?
    • 1 month, 2 weeks ago TobyMac Level 33 Inventory Admin ADMIN
      No idea, I don't have access to those numbers.
      • 1 month, 2 weeks ago veyniac Level 17 MOC Designer PRO
        I think it would be nice to see some of the Premium MOC stats. Total sold, average price, etc. Future blog post, maybe?
  • 1 month, 2 weeks ago se1977 Level 19 MOC Designer
    Cool, I'm in the top 10 for set submitters! Just having fun building all the B-models :)
    Thanks for the overview!
  • 1 month, 2 weeks ago legocy Level 11 PRO
    Well done, people. I can't thank you enough for the countless hours it's taken to compile all this information. I've only been a member of this site for a little over a year, but I now understand why I enjoy the site so much. I look forward to being a long-term member, and I want to extend a heartfelt thank you. I've spent a little over a year now entering my collection, and I look forward to continuing to be a contributing member to this site.
    • 1 month, 2 weeks ago seejay Level 14 MOC Designer
      Same here!  Thanks building a great site and a great community!
    • 1 month, 2 weeks ago fgee Level 12 MOC Designer
      I agree. Great work! And thank you so much.
    • 1 month, 2 weeks ago TobyMac Level 33 Inventory Admin ADMIN
      I did put in a lot of hours, but also for my own benefit ;-).It started out as an exercise to learn to script in Python. When I saw the numbers, I figured more people would be interested.
  • 1 month, 2 weeks ago Odurt Level 17
    Thank you TobyMac! You are the one dedicating countless hours in order to reach the 100% error-free goal. Keep up the good work!
  • 1 month, 2 weeks ago TurboRatRods Level 32 MOC Designer PRO
    Very interesting article!  Thank you for the effort needed to compile all this.
    • 1 month, 2 weeks ago Pioneer4x4 Level 13 MOC Designer
      I agree, I love statistics like this, I feel in a small part I contributed to some of those numbers.
to your account to add or reply to comments.