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What the rooms shipped.

Real builds from real GDG chapters. Two hours, one pizza, one prototype. Filter by track or chapter — or scroll until something makes you want to fork it.

All builds

Showing 1–12 of 65

APO-HAL-EMS
Track 09Michigan, USA
APO-HAL-EMS

APO-HAL-EMS (Agnotic Policy Optimizer / Hardware Abstraction Layer For Energy Management Systems) is an architectural framework and universal governance layer designed for critical infrastructure control systems and energy management systems. ​It provides deterministic validation of automated, AI-driven, and human operator decisions before actions are committed to physical hardware or control networks.

I thought I'd have to do more work by constantly correcting and re-checking that my prompts were being followed with accuracy throughout the build. Gemini was pretty solid and made the process so much smoother, creating much less work for me due to high precision and follow-through.

SensePath
Track 09GDG Brooklyn
SensePath

SensePath is a voice-first accessibility assistant designed for blind and low-vision users. It combines Gemini Live, multimodal vision, and Google Maps Platform to help people navigate the last few meters of a journey—finding entrances, benches, elevators, and understanding their surroundings through natural conversation. The standout feature is its ability to seamlessly switch between navigation, object finding, and immersive scene descriptions while keeping the interaction hands-free and acces

We expected navigation to be the hardest problem, but the real challenge was making AI know when not to speak. Designing an assistant that gives timely, concise guidance without overwhelming or distracting the user turned out to be just as important as the underlying AI itself.

HarmonicBlend
Track 09GDG Brooklyn
HarmonicBlend

HarmonicBlend is an AI-powered, browser-based DJ and stem mashup workstation that allows users to search any song on YouTube Music and turn it into a professional-grade remix in real time. The platform features dual interactive vinyl turntables, scrubbable waveform timelines, 3-band EQs, lowpass/highpass filter sweeps, crossfader controls, and an offline WAV exporter that lets users render and download their completed mixes directly to disk, as well as using Facebook's Demucs ML to create stems.

Using Gemini within Google Antigravity to build this project was a leap in autonomous, agentic software engineering. Its crazy how Antigravity reasoned across full-stack boundaries, making Python Flask backends, setting up PyTorch ML pipelines, and coding complex Web Audio API DSP frontend engines, something I would need months of training and understanding to build.

Stryker
Track 09GDG Brooklyn
Stryker

tracks body movement and converts to in-game punches, sends attacks to the firebase from two simultaneous users

need to use credits better

Drop
Track 09GDG Brooklyn
Drop

Drop is a mobile-first web app that turns New York City into a live board game where physical items like disposable cameras and toys drift from stranger to stranger. Built for urban explorers and romantic wanderers, the app lets you drop and pick up items and monitor a drop's entire journey across the city while staying completely anonymous.

Google AI Studio is a surprisingly friendly entry point for non-developers, proving that you don’t need a traditional coding background to bring a complex spatial and interactive idea to life.

nyu-ai-builder26nyc
Track 09GDG Brooklyn
nyu-ai-builder26nyc

Helps job seekers prep for interviews!

It added in suggestions to our build that we didn't even consider. It was a great addition!

Drift City
Track 09GDG Brooklyn
Drift City

Drift City is a community-driven web app that turns everyday urban spaces into an ongoing game of real-world object pass-along. Built for urban explorers, scavengers, and curious city dwellers, it tracks physical items—like a disposable camera or a rubber duck—as strangers move them from corner to corner across New York City. The cool part? You get to watch real-world human connections trace interactive, living vector paths across a digital map in real time.

Letting Gemini rephrase my prompts for AI Studio was helpful.

Nomad-Quest Game
Track 09GDG Brooklyn
Nomad-Quest Game

Nomad Quest is an interactive travel etiquette and cultural survival simulator. Instead of reading dry travel blogs or memorizing standard phrases, users are dropped into immersive "24-hour" city scenarios where they must navigate real-world dilemmas, cultural nuances, and language barriers. It gamifies global citizenship—rewarding players with passport stamps and respect points as they learn how to navigate new cultures without making costly, awkward tourist mistakes.

The "Homework" Trap: It was surprising how quickly educational content can accidentally feel like a school assignment (the "Quizlet effect"). We realized that simply having good information isn't enough; the delivery has to be dynamic. By introducing bouncy, engaging animations and restyling the scenarios to feel like an adventure game rather than a multiple-choice test, the exact same educational

Nestwork
Track 09GDG Brooklyn
Nestwork

Nestwork matches small groups of compatible strangers in NYC - by shared interests like tech, wellness, trekking, or being new to the city - and sends them a curated invitation to a real evening out, itinerary and venues included. Every member is ID-verified before their first Nest, so meeting strangers actually feels safe. Once you RSVP, a scoped group chat opens just for your Nest, active through the event and archived after - no lingering inbox, no swiping.

We assumed the hard part would be the matching algorithm. It wasn't - the hard part was realizing trust, not compatibility, was the real blocker to strangers meeting up. The ID verification step ended up being the feature people cared about most.

LISTA Speech Recognizer
Track 09GDG Brooklyn
LISTA Speech Recognizer

By training the keywords independently to automatically access the Google AI Studio webpage.

Recently, I have been working on a project related to smart home, so I chose a similar direction.

ForgeIQ: Multimodal Engineering Intelligence
Track 09GDG Brooklyn
ForgeIQ: Multimodal Engineering Intelligence

ForgeIQ is a multimodal engineering intelligence platform powered by Gemini that analyzes technical drawings and component images. Users upload engineering artifacts and receive structured AI-assisted reviews including design analysis, manufacturability (DFM), material recommendations, preliminary FMEA, quality inspection checklists, and prioritized engineering recommendations. ForgeIQ helps engineers evaluate designs faster while keeping the human engineer in the decision loop.

I was surprised by how much structured engineering insight Gemini could generate from a single technical drawing. The biggest challenge was designing prompts that produced engineering-focused analyses rather than generic image descriptions.

scout
Track 09GDG Brooklyn
scout

Scout is an AI apartment-hunting agent for NYC renters. It turns plain-English preferences into listing searches, ranks and enriches the matches, and organizes next steps in one map-first tracker. It can also draft broker outreach so renters can move quickly while staying in control of what gets sent.

I expected the AI to be most useful for writing messages, but its biggest value was translating messy human preferences into precise search filters. Once Scout understood requests like “a no-fee two-bedroom under $5,000,” the rest of the workflow became dramatically simpler.