RoadScore
Built a bilingual, offline road-trip card game that turns one passenger-operated phone into a shared scoreboard, deck library, and private trip journal.
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Project notes
Active project
Turning the miles into a game
- Estimated reading time
- About 3 minutes
- In this project story
- 6 sections
RoadScore is a road-trip card game designed for one shared phone. A passenger runs the game, the driver stays focused on the road, and everyone in the car gets something to notice, discuss, or compete for.
I built the mobile game, its deck-catalog service, and a bilingual marketing site as one pnpm monorepo. RoadScore is playable in the browser and available on Android through Google Play. The iPhone and iPad release remains in preparation.
Outcomes
Provides hundreds of bilingual cards in the free Road Trip Mix for offline play
Supports competitive and cooperative trips with configurable card, point, and time finish lines
Keeps passengers, scores, custom decks, purchases, and the latest 20 trips on the device
Goals
Make road time social without requiring every passenger to install an app or create an account.
Work offline by default so a lost signal never ends the trip.
Protect the driver’s attention by assigning control to a co-pilot or another fixed passenger.
Support different groups with bilingual content, custom decks, flexible session recipes, and consent-gated adult content.
What I built
A complete free Road Trip Mix
with hundreds of English and Spanish cards spanning trivia, spotting, conversations, challenges, and activities.
Flexible trip sessions
with balanced, quick, scenic, conversation, and chaos recipes; competitive or cooperative play; and optional card, point, or time finish lines.
Fast shared-phone scoring
with a rotating Card Reader, saved challenges, score correction, live standings, and accessible alternatives to gestures.
Private personalization
for favorites, hidden cards, custom deck import and export, and a 20-trip on-device journal with rematches.
Optional premium decks
with platform purchase restoration and a separate consent boundary for Adults Only content.
A versioned catalog pipeline
that publishes validated immutable deck snapshots while devices keep their last known-good catalog offline.
Technical highlights
- Mobile
Expo,React Native,Expo Router,TypeScript,Zustand, and Lumen’s React Native components.- Web
Astro, bilingual static content, an install-free browser build, and Lumen’s web components.- Services
Hono,Cloudflare Workers,D1, signed owner access, and shared Zod contracts.- Delivery
Turborepo,pnpm, EAS, GitHub Actions, deterministic catalog generation, and a broad release preflight.
Privacy and safety boundaries
RoadScore does not need an account or analytics service. Passengers, scores, trip history, custom decks, and purchase state stay on the device. The catalog service receives no game data or device identifier; it only returns the same published card catalog to every player.
The game also states its most important rule plainly: RoadScore is for a passenger to operate. The driver should never handle the phone while the vehicle is moving.
Current launch state
Browser and Android — available now.
The production website, catalog service, and web game are deployed. The Android app has a public Google Play listing.
Play RoadScore in the browserIn preparation
iPhone and iPad
The Apple release follows its own testing and App Store review process. The product site keeps this platform marked as coming soon.
Check RoadScore platform availabilityDe este proyecto
Dentro del trabajo.
Product story
Building RoadScore: An Offline Road-Trip Game for One Shared Phone
How I designed RoadScore around a co-pilot, an offline catalog, flexible trip sessions, and privacy boundaries that keep game data on the device.
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