Please note, not all challenges are submitted on Devpost. If you don't see the challenge you're submitting for here, check the live site and your inbox to see where you should claim your points. 

What is Local Hack Day: Build 2022?

Local Hack Day: Build is your opportunity to spend a week focused on creating and developing the projects you’ve always wanted to tackle. In accepting this quest, you are in for an adventure featuring workshops, fun mini-events, challenges, panels, and more. These will help you to earn experience points no matter what level of hacking you are at, whether it’s writing your first lines of code or creating a multi-faceted project.

We will be bringing back all of your favorite features from Local Hack Day Learn, Build, and Share 2021 like challenges, live technical sessions with MLHers, mini-events galore, and some cool content from our partners! Here’s a sneak peek:

  • Beginner-friendly workshops

  • Challenges for all difficulty levels and all topics such as design, social, technical, entrepreneurial

  • Hacker-run guilds

  • Talks from friends of MLH and our partners

  • Live sessions run by MLHers

  • And maybe an appearance from Totally Not Ryan (TNR)

Can I get swag at this event?

Yes, of course! LHD: Build will feature some amazing 2022 Hackathon Season swag…you’ll have to participate to find out exactly what you’re getting! 

What is a Guild? How can I be a part of it?

One of the best parts of our community is that it allows people to meet and make connections with others, regardless of where you live. guilds are smaller communities within Major League Hacking. Whether you come in with a guild or not, you won’t be hacking alone. 

Who organized Local Hack Day?

Local Hack Day is organized by Major League Hacking (MLH). It is our mission to empower hackers worldwide by providing them with the tools, resources, and opportunities they need to succeed. 


Your challenge submission must be completed within the submission period.

When relevent, your code must be available in some sort of public repository. 

If you're continuing work on an old project, you MUST specify in your Devpost what was worked on 1) before this day one of Local Hack Day: Build 2022 and 2) during day day of Local Hack Day: Build 2022.  

Hackathon Sponsors


Build a Javascript Game

Yesterday you started to learn how to create games. Today, take that knowledge and build a game powered by javascript.

Encrypt a Password

As I’m sure you know, keeping your passwords safe is extremely important. Websites help to keep our passwords safe by encrypting them before they save them. We want to challenge you to write code to encrypt a password on your own!

Turn One of Your Projects into a Non-Mainstream Language

Maybe you’ve heard of Python, but have you heard of EmojiCode? Yup, it’s what it sounds like - a programming language made entirely of emojis. It’s our final day of daily challenges, so let’s get a little out of the box and translate one of your projects into a non-mainstream language.

Build a Sudoku Solver

Ever wanted to solve your daily sudoku puzzle faster than ever? Write code to solve a sudoku puzzle. So you don’t feel puzzled about where to submit, head to the Day 3 Devpost.

Build a Giftable Project

Hacks are the coolest gifts this season. Think of someone in your life that could use a hack - then build it for them! Perhaps your sibling needs an app to keep track of D&D campaigns or your friend could use a browser extension to keep track of when their plants need to be watered.

Build a Deal Finder

Ever shopping online and not sure if you have the best price possible? Create a hack to help you save money and find the best deals online. Best deal for submitting?

Build a Bill Splitter

Create a bill splitter for your next friend group dinner, vacation, or coffee run. Send it to us on our Day 3 Devpost.

Use the Largest Tech Stack in a Demo

How many technologies can you fit into a demo video? Push yourself and submit on Day 3 Devpost (and yes, you can count Devpost in your tech stack)

Build with a front-end framework

Try incorporating Bootstrap, Foundation, HTML Boilerplate, or any other front-end framework into a website - either one you’ve already created or spin up a new one. Show it to us on the Day 3 Devpost.

Get Started With Deepgram

Build better voice applications with faster, more accurate transcription with our Speech Recognition API. Sign up for a Deepgram account at[] and complete the missions in your dashboard. Submit a repo with the code you wrote, and a screenshot of your dashboard showing the Project ID and all of the completed missions to our Day 3 Devpost.

Build a Chatroom Server with Python & Linode

Chatrooms are a great way to stay connected. You probably have several chats open right now! Today, we want you to learn how to build your own chatroom server using Linode! Check out this tutorial [ ] and submit your finished project to our day-of Devpost.

Create a One Button Game

Take a stab at one of our favorite challenges - one button games. This is exactly what it sounds like, your game can only have one button (think flappy bird) . Submit your hack on our Day 3 Devpost.

Devpost Achievements

Submitting to this hackathon could earn you:


Major League Hacking

Major League Hacking

Judging Criteria

  • None
    Local Hack Day: Build is about celebrating our love for learning. Instead of judging projects and awarding prizes, we are giving out points to hackers who complete these challenges.

Questions? Email the hackathon manager

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