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What the rooms shipped.

Real builds from real GDG chapters. Two hours, one pizza, one prototype. Search by name, narrow to a GDG group or a date range — or scroll until something makes you want to fork it.

All builds

Showing 49–60 of 170

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Gemini APIAntigravityCloud RunFirebaseCloud Storage

Pickle Duo is a real-time, zero-setup 2D multiplayer Pickleball game that lets you instantly play against friends by connecting your mobile phone and laptop over local Wi-Fi.

“Translating a physical sport into simple 2D pixels was a really fun design challenge. What surprised me most was dealing with mobile latency—initially, network lag made the controls unplayable. It required some back-and-forth with Antigravity to debug the touch interactions and implement client-side prediction to fix the lag. But even with that troubleshooting, I was amazed by how incredibly fast”

Antigravity

Fourfold is a real-time, two-player Connect Four game that turns a simple invite link into a friendly rivalry. Create a room, share its code with a friend, and play from separate devices with automatic board updates. Built-in turn validation, win detection, and rematches keep the competition flowing. 1. Enter your name and click Create a room. 2. Share the room code or invite link with a friend. 3. Your friend enters their name and clicks Join room. 4. Take turns clicking an arrow above a column

“What surprised me was that making the board playable was the easy part—keeping two players in sync was the real challenge. Handling simultaneous moves, enforcing turns, and agreeing on rematches showed me how much coordination sits behind a simple multiplayer game.”

Google AI StudioVertex AIImagenCloud RunCloud Storage

AI Image Cleaner is an online AI photo cleanup tool that removes unwanted objects, people, watermarks, and text from images in your browser—no software install required. Upload a photo, brush over what you want gone, and let AI fill the background naturally.

“AI Image Cleaner is an online AI photo cleanup tool that removes unwanted objects, people, watermarks, and text from images in your browser—no software install required. Upload a photo, brush over what you want gone, and let AI fill the background naturally.”

Gemini APICloud Run

An interactive 3D particle experience built for the Google I/O 2026 “Code the Countdown” challenge. Resonance 8 turns the number 8 into a living visual system using WebGL particle formations, real-time audio reactivity, voice interaction, and camera-based face tracking. Built with React, TypeScript, Vite, Three.js / React Three Fiber, custom shaders, MediaPipe, and AI-assisted interaction logic.

“The design challenge was significant: combine four entirely different signal sources — audio, voice, camera, and physical touch — into one coherent visual world that feels intuitive, not overwhelming. The result is a cinematic number eight that is always alive.”

Gemini APIGoogle AI StudioAntigravityVertex AICloud RunFirebaseFirestoreCloud Functions

Universal Media Download Engine → *1,000+ platforms. Video up to 8K. Audio in one click.** → The engine at the core of Bagback Download handles media extraction from over 1,000 supported websites — including the largest video, audio, and social media platforms in use globally. There is no need to copy-paste into different tools for different platforms; a single URL is all that is required. → For video, the engine retrieves the highest available quality — up to 4K or 8K — and presents format op

“Downloading, inspecting, and transcoding high-resolution media, cloud archives, and datasets on mobile devices often encounters slow connection speeds, bandwidth throttling, and broken transfers. Users require an installable, high-throughput cloud acceleration utility that streams, caches, and organizes remote media transfers with resilience against transient network failures.”

AntigravityCloud RunFirebaseFirestore

AI Workspace unifies developer workflows and MCP servers — from prompt engineering to model governance. A unified engineering workbench for authoring versioned system prompts, benchmarking multi-model latency side-by-side, and deploying standardized Model Context Protocol (MCP) servers with strict cost governance.

“Curated Prompt Library (2,770+ Cards) This is the largest section of the platform and its most used feature. It contains over 2,770 prompt cards — each one written, tested, and verified before being published. The library is organized by use case, making it easy for a marketing manager, a developer, a content creator, or an operations lead to find exactly what they need without reading through irr”

Gemini APIAntigravityVertex AICloud RunFirebaseFirestoreCloud Functions

A web application for customizing clothes, footwear, shades for Capyrinha GDG Summit 2026 mascot, using vector graphics and Latin American (LATAM) national flag backgrounds.

“I wanted for the community to have a custom mascot from the GDG Summit Latam 2026 so they can post the mascot with their flag on the background and their own personal cloth colors.”

AntigravityFirebase

“Aplicativo **Flutter** desenvolvido para registrar e monitorar avistamentos de capivaras em ambientes urbanos (parques, lagos, margens de rios, ruas e praças), com persistência em nuvem via **Firebase** (Firestore, Storage, Auth), gerenciamento de estado com **Provider**, arquitetura **MVVM com Command Pattern** oficial do Flutter/Google e design minimalista integrando a mascote oficial do evento.”

Professional networking at tech conferences, GDG (Google Developer Groups) events, and meetups is often awkward, repetitive, and stiff. GDGLink gamifies the ice-breaking experience into an interactive, real-time 8-bit playground:

“Creating a game in 40 minutes was really impressive.”

Gemini APIGoogle AI StudioFirebaseFirestore

A lightweight WebAR proof-of-concept application where users can see their mirrored live webcam stream, toggle a facial landmark mesh, and draw in real time. The drawn strokes will bind to the user's 3D facial geometry, maintaining spatial depth and perspective as the user turns, tilts, or makes facial expressions.

“Creating custom face filters for platforms like Instagram typically requires specialized 3D software (Blender, Spark AR Studio) and technical knowledge of UV unwrapping and 3D rigging. There is no lightweight, interactive way for creators to test or sketch directly on their own dynamic face in real time.”

Google AI StudioCloud Run