Create unique voice-based experiences with LEGO MINDSTORMS and Alexa for a chance to win from over one hundred prizes.
This contest is over! See all the winning entries. Want more chances to win prizes? Check out our active contests.


To be eligible for the contest, you must meet the following requirements at time of submission:

  • You are at least 13 years of age. If you are 13-17 years of age or a minor in your territory, then you must receive your parent’s or legal guardian's permission prior to submitting an entry into this challenge. Ask your parent or guardian to 1) complete this consent form and send to, 2) sign up for an Amazon Developer Account on your behalf, and 3) help submit your entry. If you are participating as a team, you must submit a completed consent form for each member of your team that is a minor in your territory.
  • You are not a resident of Brazil, the Province of Quebec, Cuba, Iran, Syria, North Korea, Sudan, the region of Crimea, or any country, state, or province or territory where the laws of the United States or local law prohibits participating or receiving a price in this challenge.
  • You are not involved in the execution or administration of this challenge.
  • You are not a member of any guild, union or other organization that may prohibit you from participating in this challenge and that would restrict, require due payment or otherwise have the right to oppose your participation in this challenge.
  • You are not employed by or an immediate family member or household member of an employee or employees of Amazon, the LEGO Group, or Hackster Inc., or their respective parents, subsidiaries, affiliates, advertising, promotion and public relations agencies, representatives, and agents.

Submission requirements

Important Dates

Final Project Submissions Deadline: Dec 31, 2019 at 11:59 PM PT

Contest winners will be announced on: Jan 17, 2020 at 11:59 PM PT

For your submission to be eligible, you must meet ALL of the following requirements unless otherwise stated.

General Requirements

  • You must be registered as a participant for this contest.**
  • Your entry must be your own original work.
  • Your entry cannot have been selected as a winner in any other Hackster contest.
  • Your entry should be provided in English.
  • Your team is no more than 4 members per entry.***

**As a participant of the contest you may choose whether to submit one or more entries either as an individual or as a member of a single team.

***By entering a submission to this contest on behalf of a team, you acknowledge that you are the designated representative authorized to act on behalf of your team. (See Official Rules for details.)

Hardware/Software Build Requirements

  • The creation must use LEGO Mindstorms EV3. Participants can additionally use more than one Mindstorms EV3 Brick and can combine with elements from other LEGO sets (for example, LEGO Technic) or other non-LEGO hardware per the terms of use that accompany any components you use.
  • The creation must use Alexa Gadgets Toolkit’s Gadget Interfaces (Predefined and/or Custom) to interact with Alexa and voice. Participants can additionally use other software, services, and APIs per the terms of use that accompany them.
  • Required hardware: LEGO Mindstorms Kit and your choice of connection to any the following Echo devices: Echo, Echo Show, Echo Spot, or Echo Dot.

Project Documentation Requirements

  • Your project must include your project name, introduction, and description of your creation.
  • Your project must include a video demo of your working creation.
  • Your project must include a walkthrough showing how you created you project, key code snippets, images, screenshots, etc.
  • Your project must include your working gadget source code (1+ Python files).
  • Your project must include working skill source code. Ideally a single Node JS Lambda file if you choose the Alexa-hosted route. Otherwise, it can be written in a language of choice supported by Lambda, e.g. Node JS, Python, etc.
  • Your project must be documented in English.
  • Your project must be submitted by Dec 31, 2019.

Optional (but encouraged): Consider including assets and instructions enabling others to build your project. This includes LEGO build instructions, coding instructions, and LEGO hardware components list. See Judging Criteria to see how this will be factored into the judging.

Judging criteria

Your project will be judged according to the rubric below.

  • Use of Voice Interaction with LEGO MINDSTORMS EV3 (40 points)
    We are looking for creative and engaging experiences that showcase use of voice interaction. Including a clear explanation and demonstration of how voice is used with your Mindstorms EV3 creation. What is the goal of your build and how does voice make the experience better or more fun? Is it intuitive to use voice and Alexa to interact with your Mindstorms EV3 creation and its environment?
  • Innovative Design and Solution (40 points)
    Usage of Alexa Gadgets Toolkit (use of Pre-Defined and Custom Interfaces) should be thoughtful in your design and implementation. We will also be looking at how your voice design incorporates intuitive conversation and dynamic input based on the user, Mindstorms EV3 activity, and environment. Your LEGO build should have interesting and innovative elements in its form factor designed to interact with the end user that supports the goals of your creation.
  • Enabling Others to Build (20 points)
    Helping and inspiring others to build what you built will win you more points! Show how you created your project, including source code, your design/building process, and model instructions. Ask yourself: “If I were a beginner reading this project, would I understand how to recreate it?” We will look at whether build instructions, source code, and how to get it working are included with submission.

How to enter

Step 1: Register for the Contest

  • Start by creating a free account on (or sign-in if already a member).
  • Register for the contest by clicking “Register as a participant” and opt-in to receive contest updates.

Step 2: Build and Document Your Project

  • Build your project according to the submission requirements.
  • Document your project build using Hackster’s project template. To create a new project, click “create new project” on the contest page or the “+” symbol in the top right corner of your Hackster page.
  • 13-17 Year Olds Can Participate! Every submission by an individual or team of developers with participants aged 13-17 or minors in their territory must have a parent or legal guardian of each minor participant complete this consent form and upload as a part of your submission. For questions, email See Official Rules for how to enter as a minor.

Step 3: Review and submit your project

  • Review your project and make sure it meets all the submission requirements.
  • Submit your project by December 31, 2019 at 11:59 PM PT by clicking “review and submit project” on the contest page.

Full rules

LEGO MINDSTORMS Voice Challenge: Powered by Alexa


Please read these rules before entering the LEGO MINDSTORMS Voice Challenge: Powered by Alexa (“Challenge”). The goal of the Challenge is to encourage individuals to create a LEGO MINDSTORMS EV3 creation that interacts with its environment through voice and Alexa using LEGO MINDSTORMS EV3 and the Alexa Gadgets Toolkit. By posting a submission, you acknowledge that you have read and agree to be bound by these Official Rules and the decisions of Amazon Digital Services LLC (“Sponsor”, “we”, “our” or “us”) and the judges, and that you satisfy all eligibility requirements.


Open to individuals who are (1) at least 13 years of age or the age of the majority in their locale (and if an eligible minor have obtained consent to participate in the Challenge from their parent or legal guardian at the time of Submission); and (2) not a resident of a jurisdiction under U.S. export controls or sanctions (each, a “Participant”). Challenge is void in Brazil, the Province of Quebec, Cuba, Iran, Syria, North Korea, Sudan, the region of Crimea, any country, state, province or territory where the laws of the United States or local law prohibits participating or receiving a prize in the Challenge. Participants may not be members of any guild, union or other organization that may prohibit them from participating in this Challenge and that would restrict, require due payment or otherwise have the right to oppose such participant’s participation in this Challenge. Directors, officers, employees, interns, and contractors (“Personnel”) of Sponsor, the LEGO Group, Hackster Inc., their respective parents, subsidiaries, affiliates, and their respective advertising, promotion and public relations agencies, representatives, and agents (collectively, “Challenge Entities”), immediate families members of such Personnel (parents, siblings, children, spouses, and life partners of each) and members of the households of such Personnel (whether related or not) are ineligible to participate in this Challenge.

Participants may participate in the Challenge by themselves or participate as a “Team” consisting of up to 4 Participants. Each Participant is only permitted to be part of one Team. If a Participant elects to participate on their own they cannot also participate with a Team. Any Participant that is part of more than one (1) Team may be disqualified and his/her corresponding Teams may be disqualified as well at the sole discretion of Sponsor. Only one (1) member of the Team may post a submission on behalf of a Team but all those listed on the registration will be deemed Participants. All prizes and/or prize money will be split evenly among the members of a winning Team, as identified on the online registration. Additionally, all winning Team members will split any and all tax obligations and withholdings that may be applicable dependent on the value of the prize money awarded to each Team member. Each winning Team member will be solely responsible for tax obligations and withholdings solely related to the portion of the prize they receive. Each Participant must be eligible to participate in this Challenge and comply with these Official Rules or the Participant will and the Team associated with any Participant in question may be disqualified. This Challenge is subject to all applicable federal, state, territorial, provincial and local laws. By participating in the Challenge, all Participants unconditionally accept and agree to comply with and abide by these Official Rules and the decisions of the Sponsor which will be final and binding including the Sponsor’s right to verify eligibility, to interpret these Official Rules, and to resolve any disputes relating to this Challenge at any time. Only Participants or Team members may work on their submission, without the influence of any other individuals.


Challenge begins at 12:00:01 a.m. (PT) on September 24, 2019 and ends at 11:59:59 p.m. (PT) on December 31, 2019 (the “Submission Period”). To participate, during the Submission Period you must go to and follow the instructions to (i) create a free account (or log in if you already have an account) or if an eligible minor have your parent or legal guardian create an account on your behalf ; (ii) create a free account that uses the same email address as your account; (iii) register as a Challenge Participant by clicking the “Register as a Participant” button on the page; and (iv) submit an original LEGO MINDSTORMS EV3 creation that connects to the Alexa Gadgets Toolkit you and/or your Team created along with corresponding videos, assets, code snippets to further describe how the LEGO MINDSTORMS EV3 creation functions and upload using the “Submit my Final Submission” button (each, a “Submission”).

All Submissions must be received by 11:59:59 p.m. (PT) on December 31, 2019. Participants/Teams will be permitted to submit multiple Submissions throughout the Submission Period, however, Participants/Teams will only be eligible to receive (i) one (1) Grand Prize or Finalist Prize; (ii) one (1) Early Participation Prize; and (iii) one (1) Bonus Prize (that can be obtained in addition to a Grand or Finalist Prize, if applicable) regardless of the number of Submissions received by a Participant/Team. Participants assume all risk of lost, late, misdirected, incomplete, or unintelligible Submissions.

Sponsor’s (or its contractor’s) servers and clock shall be deemed the official clock for all phases of the Challenge, and participant’s proof of a submission does not constitute proof of receipt by Sponsor. Sponsor is not responsible for (i) lost, misdirected, late, incomplete, or unintelligible Submissions or for inaccurate Submission information, whether caused by participant or by any of the equipment or programming associated with or utilized in the Challenge, or by any technical or human error that may occur in the processing of Submissions; or (ii) any printing, production, human or typographical errors in any materials associated with the Challenge.

Sponsor reserves the right in its sole and unfettered discretion to disqualify at any time any Submission containing obscene, offensive, pornographic or sexually explicit material, or libelous, disparaging, infringing or other inappropriate content or subject matter (as determined by Sponsor in its sole discretion).


Each Participant/Team must follow and meet the following requirements when posting a Submission:

  • Submissions are the original work of the Participant/Team or an update to an original work of the Participant/Team;
  • LEGO MINDSTORMS EV3 creation may only use LEGO MINDSTORMS EV3 and other LEGO elements;
  • LEGO MINDSTORMS EV3 creation must use Alexa Gadgets Toolkit to:
  • Connect to a compatible Echo device
  • Build an experience using gadget interfaces (predefined and/or custom) that interacts with Alexa;
  • Submissions do not infringe or violate the rights of any third party, including but not limited to, copyrights, trademarks or copyrighted material not owned by the Participant/Team, contract and licensing rights, rights of publicity or privacy, moral rights, or any other intellectual property rights; and
  • Submissions are not subject to any third party agreements, and that Sponsor will not be required to pay or incur any sums to any person or entity as a result of its ownership, acquisition, use or exploitation of the Submissions or rights therein.

Additional Requirements

All Submissions must comply with the terms applicable to “Alexa Gadgets” in Sponsor’s App Distribution and Services Agreement, as updated from time to time (the “ADSA”), and all Program Policies (as such term is defined in the ADSA), including content guidelines that prohibit derogatory or sexually explicit content, that promote an illegal activity or gadgets directed to children under the age of 13. Submissions that cause any harm, as determined by Sponsor in its sole discretion, will be disqualified from the Challenge. Submissions may not request any personal or personally identifiable information from Alexa customers. Questionable designs or content must be cleared with Sponsor prior to the Challenge. All Submissions must interact with users using only the English language. Any Participants/Teams using Amazon Web Services (“AWS”) Lambda or other AWS services must agree to the terms of the AWS Customer Agreement, as revised from time to time, although Participants/Teams may use other frameworks or web services in order to build their Submission.

Sponsor is collecting personal information primarily to process the Submissions and to contact you if necessary, but also to potentially contact you for marketing purposes. If you do not wish to be contacted for marketing purposes, you will be provided with a method to opt-out from future communications. You may update or change your “E-mail Preferences & Notifications” in your Amazon account. Sponsor will share your information with third parties that have a need to know, such as the judging panel, and by entering, you agree to the sharing of your information with the judging panel and third parties Sponsor retains to assist in administering the Challenge. If you do not agree to these terms or to Sponsor’s privacy notice located at, please do not post a Submission.


During the Submission Period, the first hundred (100) Participants to submit a complete and valid submission (as determined by Sponsor, in their sole discretion) will be deemed an Early Participation Prize winner, subject to verification and compliance with these Official Rules.


Following the conclusion of the Submission Period, each Submission will be rated by a panel of qualified judges selected by Sponsor using the following criteria: (a) Voice interaction with LEGO MINDSTORMS EV3 (40 points); (b) Innovative design and solution (40 points); (c) Enabling others to build — accompanying submission package includes video demonstration, code snippets, and detailed building process. (20 points) (collectively, the “Judging Criteria”). The one (1) Submission with the highest score will be deemed the potential Grand Prize winner, subject to verification and compliance with these Official Rules. The five (5) Submissions with the next highest scores will be deemed potential Finalist Prize winners, subject to verification and compliance with these Official Rules. The one (1) Submission with the highest score from an eligible Participant between 13-17 years of age will be deemed the potential Bonus Prize winner, subject to verification and compliance with these Official Rules. In the event of a tie, the tie will be broken by a separate additional judge who will score the tied Submissions solely on Innovation. Winners will be announced on or around January 17, 2020.

In the event a potential winner’s Submission is disqualified, the Participant/Team who submitted the next highest rated Submission will be selected as a potential winner, and must comply with the requirements in these Official Rules. All decisions of the Sponsor and judges are final and binding.


One Grand Prize winner will receive a Grand Prize package, which has a total approximate retail value (“ARV”) of up to $26,200.00 USD and includes:

1. $20,000.00 in Gift Cards (which will be split evenly among each member of a winning Team, if applicable); and

2. A trip for winner and one (1) guest to LEGO Headquarters in Billund, Denmark, valued at $5,500. Trip consists of:

• Roundtrip economy class airfare for winner departing from an international airport near the winner’s residence (as determined by Sponsor in their sole discretion) and arriving at an airport in or near Billund, Denmark (as determined by Sponsor in their sole discretion) (the “Airport”);

• 3 nights standard hotel accommodations for winner and guest at a hotel in or near LEGOLAND in Billund, Denmark (the “Hotel”);

• 2 tickets to LEGO House;

  • 2 tickets to LEGO World; and

3. LEGO sets for winner, valued at $700.00 USD.

Each Finalist Prize winner will receive a $10,000.00 in Gift Cards award (which will be split evenly among each member of a winning Team, if applicable) and $700 in LEGO sets, which has a total approximate retail value of up to $10,700.00.

The Bonus Prize winner will receive a $5,000.00 in Gift Cards (which will be split evenly among each member of a winning Team, if applicable) and $700 in LEGO sets, which has a total approximate retail value of up to $5,700.00.

Each Early Participation Prize winner will receive a $150.00 USD Gift Card.

All winners must have or will need to create an account in order to redeem the Gift Card (“GC”) portion of the prize. The GC may only be used for purchases of eligible goods on or certain of its affiliated websites. Redemption of the GC will be subject to our standard terms, conditions and restrictions applicable to Gift Cards in effect on the day of issuance of the GC. The GC cannot be redeemed for the purchase of gift cards. Except as required by law, the GC cannot be reloaded, resold, transferred for value, redeemed for cash, or applied to any other account. Amazon is not responsible if any GC is lost, stolen, destroyed or used without permission. If the GC is lost or stolen, it will not be replaced. See for complete terms and conditions. The GC is issued and © 2019 by ACI Gift Cards, Inc, a Washington corporation.

The maximum total ARV for the Grand Prize, the five (5) Finalist Prizes, the Bonus Prize, and the Early Participation Prizes combined is $100,000.00 USD. Each winner will be responsible for paying all costs and expenses related to the prize that are not specifically mentioned, including, but not limited to, taxes, and any other expenses that might reasonably be incurred by the winner in receiving or using the prize. Each winner may be required to submit to Sponsor his/her social security number or tax payer ID number and W-8BEN, or other such tax filing information required by Sponsor in order to claim the prize. All prizes awarded will be inclusive of any taxes Sponsor is required by law to withhold as well as applicable sales, use, gross receipts, goods and service, or similar transaction based taxes. All other taxes, costs and expenses associated with acceptance and use of any prize not specified in these Official Rules as being provided are the sole responsibility of the winner. IF TAXES ARE APPLICABLE TO THE PRIZES, IT IS THE RESPONSIBILITY OF THE WINNER TO PAY TO THE APPROPRIATE AUTHORITIES. PAYMENTS TO CHALLENGE WINNERS ARE SUBJECT TO THE EXPRESS REQUIREMENT THAT THE WINNER SUBMIT TO SPONSOR ALL DOCUMENTATION REQUESTED BY SPONSOR TO PERMIT COMPLIANCE WITH ALL APPLICABLE STATE, FEDERAL, LOCAL AND FOREIGN (INCLUDING PROVINCIAL) TAX REPORTING AND WITHHOLDING REQUIREMENTS. Challenge winners are responsible for ensuring that the tax documentation submitted to Sponsor complies with all applicable tax laws and requirements. If a winner fails to provide the documentation or submits incomplete documentation, the prize may be forfeited and Sponsor may, in its sole discretion, select an alternate winner.

Sponsor reserves the right to substitute a prize (or portion thereof) for an item of comparable or greater value, in its sole discretion. All prizes will be awarded “AS IS” and WITHOUT WARRANTY OF ANY KIND, express or implied (including, without limitation, any implied warranty of merchantability or fitness for a particular purpose).

Grand Prize Trip Conditions

Trip will be booked and fulfilled by Sponsor. If you are selected as the Grand Prize winner, Sponsor will use the information you submit in connection with this Challenge to fulfill the prize. Grand Prize winner will be responsible for paying all costs and expenses related to the prize that are not specifically mentioned herein, including but not limited to, taxes, withholdings, additional transportation, food and beverages, gratuities, incidentals, souvenirs, baggage costs, telephone charges, excursions, travel insurance, upgrades, and any other expenses that might reasonably be incurred by winner in receiving or using the prize.

Trip must be booked no later than March 22, 2020 or trip portion of prize will be forfeited. Actual value of the prizes may vary based on factors at time of booking, including, but not limited to, dates of travel, date and time of travel booking, airfare fluctuations, and distance between departure and destination.

If the Grand Prize winner resides within a 125-mile radius of the Hotel, air transportation may not be provided and winner and his/her guest may be provided with ground transportation to/from winner’s residence to Hotel in lieu thereof. Winner is solely responsible for obtaining all necessary identification and/or travel documents required for travel, including, but not limited to, a valid driver’s license or government issued passport and/or visa (if applicable). Travel dates are at the sole discretion of Sponsor. If a potential winner is unable to participate in the trip prize during the dates specified, the prize may be forfeited and Sponsor may select an alternative potential winner for the prize. Winner must comply with all Hotel rules and regulations. Failure to do so may result in forfeiture of such portion of prize. Upon any prize forfeiture, no compensation will be given.

Challenge Entities are not responsible for any cancellations, delays, diversions or substitution, event or park cancellations or closures, or any act or omissions whatsoever by the air carriers, hotels, transportation companies, parks or resorts, prize providers, or any other persons providing any prize-related services or accommodations. Lost, stolen, or damaged airline tickets, event tickets, travel vouchers, or certificates will not be replaced or exchanged. All portions of the prize are subject to availability and change and are at the sole discretion of Sponsor.


For the avoidance of doubt as between Sponsor and Participants/Teams, all Submissions created by Participants/Teams will remain the property of the Participant/Team except to the extent a Participant/Team incorporated elements in their Submission owned by Sponsor, but Sponsor and its designees will have the rights to use the Submissions described below. By submitting a Submission in this Challenge, each Participant/Team warrants and represents that he or she owns, or otherwise has the right to use, all of the intellectual and industrial property rights in and to the Submission. Further, each Participant/Team hereby grants Sponsor and its affiliates a perpetual, irrevocable, worldwide, royalty-free, and non-exclusive license to (i) use, review, assess, test and otherwise analyze your Submission in connection with this Challenge, and (ii) feature your Submission and all content contained therein in connection with the marketing or promotion of this Challenge.

Except where prohibited, each prize winner further consents (and agrees to sign any additional documents required by Sponsor to formalize, effect or perfect such consent) to Challenge Entities’ use of Submissions as specified herein and the use of any Participant/Team names, likeness (photograph), biographical information, and voice in advertising/publicity/trade (including local and/or national television stations or print publications that may be covering any element of this Challenge) worldwide without compensation, notice or approval, and prize winner disclaims any ownership rights to the content of such advertising/publicity/trade material.


Challenge Entities and their Personnel will not enter into any correspondence, including email, with non-winning Participants/Teams relating to such Participants’ participation in the Challenge. Sponsor reserves the right, in its sole discretion, to disqualify any individual found tampering with the Submission process or Submission materials or otherwise interfering with the proper administration of the Challenge or violating these Official Rules.


Each Participant/Team hereby acknowledges and agrees that the relationship between themselves and the Challenge Entities is not a confidential, fiduciary, or other special relationship, and that the Participant’s/Team’s decision to provide the Submission to Sponsor for purposes of the Challenge does not place the Challenge Entities in a position that is any different from the position held by members of the general public with regard to elements of the Submission, other than as set forth in these Official Rules. Each Participant/Team understands and acknowledges that the Challenge Entities have wide access to Submissions, technology, designs, and other materials, and that new ideas are constantly being submitted to them or being developed by their own employees. Each Participant also acknowledges that many ideas may be competitive with, similar to, or identical to the Submission in theme, idea, format, or other respects. Each Participant/Team acknowledges and agrees that such Participant/Team will not be entitled to any compensation as a result of Challenge Entities' use of any such similar or identical material that has or may come to Challenge Entities, or any of them, from other sources. Participants acknowledge that other Participants/Teams may have created ideas and concepts contained in their Submission design that may have familiarities or similarities to their Submission design, and that they will not be entitled to any compensation or right to negotiate with the Challenge Entities because of these familiarities or similarities. Participants also acknowledge that the Challenge Entities will not restrict work assignments or representatives who have had access to your Submissions. By entering this Challenge, Participants agree that use of information in the Challenge Entities’ representatives’ unaided memories in the development or deployment of Challenge Entities’ products or services does not create liability for Challenge Entities under these Official Rules or copyright or trade secret law.

Participants/Teams further agree that the Challenge Entities are not responsible for the following: (a) electronic transmissions, Submissions or notifications that are lost, late, stolen, incomplete, damaged, garbled, destroyed, misdirected or not received by Sponsor or their agents for any reason; (b) any problems or technical malfunctions, errors, omissions, interruptions, deletions, defects, delays in operation or transmission, communication failures and/or human error that may occur in the transmission, shipping errors or delays, receipt or processing of Submissions or related materials; or for destruction of or unauthorized access to, or alteration of, Submissions or related material; (c) failed or unavailable hardware, network, software or telephone transmissions, damage to Participants’ or any person’s computer and/or its contents related to or resulting from participation in this Challenge; (d) causes that jeopardize the administration, security, fairness, integrity, or proper conduct of this Challenge; (e) any Submissions posted in a manner that is not expressly allowed under these Official Rules (all such Submissions will be disqualified); or (f) any printing errors in these Official Rules or in any advertisements or correspondence in connection with this Challenge or judging. Sponsor reserves the right, in its sole discretion, to cancel or suspend this Challenge should virus, bugs, fraud, hacking, or other causes corrupt the administration, security, or proper play of the Challenge. In such cases, notice to this effect will be posted on the Challenge Site and prizes to the extent awarded will be awarded as determined by Sponsor prior to cancellation. If, in Sponsor’s opinion, there is any suspected or actual evidence of electronic or non-electronic tampering with any portion of the Challenge or if technical difficulties compromise the integrity of the Challenge, the Sponsor reserves the right to void suspect Submissions and/or terminate the Challenge and award prizes in its sole discretion.


The potential Grand Prize winner, FinalistPrize winners, and Bonus Prize winner will be required to sign and return an Eligibility Affidavit; Liability and Publicity Release or other such form as requested by Sponsor. Prior to awarding a prize, Sponsor may, in its sole discretion, require the potential winners to sign such additional documents Sponsor decides are necessary to confirm eligibility, to obtain a liability/publicity release, and to award any prize. Failure to return any required document by the date requested by Sponsor will deem the winner as ineligible to receive the prize. If any documentation is not returned by the specified dates and times or if a potential winner is deemed ineligible prior to the prize being awarded, Sponsor may, in its sole discretion, award the prize to the next Participant/Team receiving the next highest score.


The Challenge and all accompanying materials are copyright © 2019 by Amazon Digital Services LLC. All rights reserved. By entering, participants agree to be bound by these rules. No transfer, assignment, cash redemption or substitution of prizes is permitted except by Sponsor due to prize availability and then with prizes of equal or greater value. Participants/Teams agree (for themselves and their heirs) that the Released Parties will have no liability, and will be held harmless by such participants to the maximum extent permitted by law for any liability, loss, injury, or damage to property or to person, including death, and reasonable attorney’s fees and court costs, due in whole or in part, directly or indirectly, by reason of participation in the Challenge, or by reason of the acceptance, possession, use or misuse of the prizes, even if caused or contributed to by the negligence of any of the Released Parties. Challenge is governed by the laws of the United States and the State of Washington, USA. As a condition of participating in this Challenge, participants agree that any and all disputes which cannot be resolved between the parties, and causes of action arising out of or in connection with this Challenge, shall be resolved individually, without resort to any form of class action, exclusively before a court located in King County, Washington, USA having jurisdiction. Further, in any such dispute, under no circumstances will participants be permitted to obtain awards for, and hereby waive all rights to claim, punitive, incidental or consequential damages, including attorneys' fees, other than participant’s actual out-of-pocket expenses (e.g. costs associated with entering), and participant further waives all rights to have damages multiplied or increased. Participants agree that the decisions of Sponsor and the judges related to the Challenge are final. By participating in the Challenge, participants consent to the use of their names, biographical information, Submissions, images and/or likenesses in any manner and in any medium for any purpose in connection with the Challenge, including worldwide, without additional compensation, except where prohibited by law.


After the winners are confirmed, the winners’ names will be posted at


Amazon Digital Services LLC, 410 Terry Avenue North, Seattle, WA, 98109 USA.

LEGO, the LEGO logo, MINDSTORMS and the MINDSTORMS logo are trademarks of the/sont des marques de commerce de/son marcas registradas de LEGO Group. ©2019 The LEGO Group. All rights reserved/Tous droits réservés/Todos los derechos reservados.