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.
GothamIntel is an NYC sublet marketplace where seekers swipe and search for homes, and hosts manage listings, inquiries, and messages. Gemini powers vibe search (text, image, or voice), a listing chat assistant, and neighborhood intel; safety, noise, transit tips, and lease takes grounded in local listing data.
“We were surprised how quickly we could build with AI Studio.”
Where physical brawl meets vocal brawl! Voice Clash: Smash Arena is an innovative local 2-player platform fighter that transforms your voice into your ultimate weapon. Players maneuver using fluid keyboard controls while unleashing powerful elemental attacks and cinematic combos simply by shouting skill words into a single shared microphone — completely hands-free!
“Gemini got the gist of the game in the first go, so I get to spend rest of the time making small adjustments such as card positioning and adding player camera.”
Computer Madness turns any song into a living 3D visualizer by actually understanding it — key, tempo, meter, and dynamics — instead of just reacting to volume. That musical structure drives a spinning sphere wrapped in video or a live FFT spectrogram, cutting and accelerating in lockstep with the beat grid. Optional AI lyric transcription overlays synced vocals directly onto the sphere. It's for musicians, VJs, and anyone who wants visuals that move with the music's structure, not just its peak
“I was surprised at the ease with which I could prototype my ideas with AI studio. I could just bring the idea and it could find the relevant technologies and give me a good feel for how the idea would turn out without much friction.”
SpecForge turns a plain English product idea into a full layered system architecture. Type "AI-powered ATS" and it reasons out every layer from resume upload form to vector search to streaming response, with a numbered SVG flow diagram, a component card breakdown, and an animated step-by-step walkthrough showing exactly where each request goes. You can refine the architecture through a chat panel that diffs every change like a git log, save checkpoints, and attach PDFs or Word docs as context.
“SpecForge turns a plain English product idea into a full layered system architecture. Type "AI-powered ATS" and it reasons out every layer from resume upload form to vector search to streaming response, with a numbered SVG flow diagram, a component card breakdown, and an animated step-by-step walkthrough showing exactly where each request goes. You can refine the architecture through a chat panel”
MTA MetroPulse is an event-driven dispatch engine that tracks subway workers and incidents deep underground where GPS doesn't reach. It ingests simulated telemetry via Apache Kafka, triages hazards in real-time using a PyTorch computer vision model, and relies on PostGIS to route the closest qualified personnel to intercept moving trains. It's built for transit operations teams who need to transform chaotic, high-velocity data streams into split-second, geospatial dispatch decisions.
“I assumed the hardest part would be the real-time Kafka streaming, but it turned out to be the geospatial logic. Building the spatial fallback query—teaching the system to dynamically expand its PostGIS search radius when workers were too fatigued—was the "aha" moment where it's-working moment that brought the whole architecture to life.”
ResilAI is an AI Incident Readiness Platform that helps enterprise security teams automatically measure and remediate AI-specific risks. Instead of relying on manual questionnaires, it ingests live telemetry from SIEMs (like Splunk and Wazuh) to calculate a deterministic Governance Health Index. The coolest part is our Dual-Engine Architecture: we use hard, verifiable math to calculate the risk scores, and use Google Gemini for the executive summary.
“I was most surprised by how perfectly we could use Gemini to translate highly technical, deterministic telemetry data into clear, executive-level narratives without any hallucination. By strictly separating the "math" (our scoring engine) from the "speech" (Gemini), we proved that AI can make compliance ledgers highly readable while remaining 100% legally auditable.”
Our project is an AI-powered, multilingual emergency triage platform that eliminates language barriers in crisis situations. When a user calls in their native language, our Twilio and Gemini-powered backend instantly transcribes, translates, and extracts their exact emergency and location. This data is streamed in real-time to an operator dashboard, which maps the caller's location alongside the nearest police stations and fire departments for rapid, life-saving dispatch.
“Building this highlighted the incredible potential of combining real-time telecom APIs with generative AI to solve life-critical communication barriers. Successfully orchestrating Twilio, Gemini, and Supabase into a live pipeline was challenging, but seeing a foreign-language phone call turn into a pinpointed map rescue route made it all worth it.”
Don’t know where to eat in New York City? RESERVED NYC helps solve this problem by finding restaurants that are perfect for you based on your cuisine preferences, the occasion, the vibe you are looking for, the location, and whatever else you can think of. We want to make sure you find that perfect restaurant for you! You can also generate custom invitations to send to your guests, create custom restaurant guides, and see where other people are eating too.
“Initially, we did not put much thought into the prompt. But as we were working on our app, there were changes we wanted to make that were harder to implement. What we learned was that it’s very important to design a good prompt to make things work”
A targeted rent freeze program for households earning 30–60% of Area Median Income, combined with landlord subsidies and aggressive affordable housing production. This two-pronged approach stabilizes existing tenants while addressing long-term supply constraints.
“how easy it was to use the google AI ecosystem”
AI Interviewer is a real-time, voice-enabled mock interview platform that helps software engineers master both algorithmic coding and system design interviews. Built for tech candidates seeking realistic practice without the hassle of scheduling, it pairs an interactive code editor and architectural whiteboard with customizable interviewer personas. Powered by the low-latency Gemini voice AI that dynamically probes edge cases mid-interview and delivers comprehensive performance breakdown after.
“One of our challenges was to stop Gemini from giving away solutions too early. What surprised us was how naturally it calibrated its guidance, offering subtle nudges while staying in character according to the selected persona, acting as a real interviewer.”
Twin Space Dodger is a retro-styled dual-ship space runner designed to test parallel motor control and split-brain reflexes. Players control two ships simultaneously across independent parallel lanes to dodge incoming asteroid storms. With zero shooting, custom Web Audio synthesis, desktop dual-keyboard mapping (WASD + Arrows/IJKL), and mobile landscape dual-thumb touch zones, difficulty ramps up smoothly after a 5-second per-lane warmup into full dual-sync chaos.
“I was surprised by how effectively the 5-second single-lane warmup trained players' left-and-right hand dexterity before launching them into dual-sector chaos. Fine-tuning the Web Audio synth and parallel collision detection made the retro arcade feel remarkably responsive and addictive.”
