We just published a new documentary-style video on the freeCodeCamp channel that takes you behind the scenes of a high-energy 24-hour hackathon.

Quincy Larson traveled to Hong Kong to serve as a judge at SeaHack. There were more than 250 developers and builders from over a dozen countries. The challenge? Team up, brainstorm, and build a working AI startup from scratch before the clock runs out.

If you've ever wondered what it's like to participate in a high-stakes hackathon, or if you just want some inspiration for your next coding project, you will want to check this out.

Throughout the event, Quincy walked the floor, interviewing developers who were battling sleep deprivation to get their MVPs deployed before the strict 3:30 PM deadline. It is amazing to see what small teams can accomplish with modern AI tools and a tight time constraint.

Here are just a few of the clever projects built during the event:

  • An AI Cantonese Tutor: An app that visualizes tones and grades pronunciation in real-time, complete with a feature to learn by singing along to Cantopop.

  • "Tinder for Loans": A platform designed to lower the friction for loan applicants by letting them submit quick video pitches that lenders can quickly swipe on.

  • A Privacy-First Local CRM (REFT): A customer relationship management tool built for local small businesses. It connects directly to WhatsApp or Telegram and runs completely locally, keeping sensitive customer data safely out of the cloud.

  • A Conversational Gift Recommender: An LLM-powered engine that helps people buy the perfect personalized toy for someone else's child by gathering information to generate a custom story and matching product recommendation.

More than just a coding competition, events like SeaHack highlight the global scale of the tech community. The organizers emphasized that the future of AI isn't confined to Silicon Valley. There are thriving hubs of innovation in places like Hong Kong where East meets West.

Whether you are a seasoned software developer or someone who has never touched a code editor before (like a few of the participants Quincy interviewed!), hackathons are an incredible way to learn, network, and turn a concept into a live demo.

Watch the full video to see the frantic final minutes of deployment, the live presentations, and the final judging process.