Trivia Turbo

The game

Trivia Turbo combines arcade racing with shared trivia rounds. Up to eight human and computer racers compete over three laps. Cars accelerate automatically; players steer around cones and answer the same questions at shared checkpoints. A correct answer earns a three-second speed boost.

Nine tracks, 330 bundled questions across 11 categories, and adjustable answer timers give each room a different setup. Players can choose a single race or a multi-race cup, add computer opponents with different difficulty levels, or practice solo with personal bests saved in their browser.

Try it

Open the Live demo and choose Solo practice for a quick look. For multiplayer, choose a racer name, create a room, and share its six-character code with friends. Each person joins from their own browser; no account or download is required. A host can also add computer racers in the lobby.

Use the arrow keys, A/D, or touch controls to change lanes. Everyone gets the same trivia question when a racer reaches a checkpoint. The host can select categories, a track, and the answer time before starting.

Watch the 20-second gameplay trailer above for a quick preview without opening the game. Playback controls include English captions and fullscreen viewing.

How the multiplayer works

The React and TypeScript interface uses Canvas 2D to draw the race. Vinext builds the application for a Worker runtime. A separate Cloudflare Worker assigns each room a SQLite-backed Durable Object, which coordinates players and pushes updates over WebSockets.

The server controls movement, trivia timing, boosts, collisions, and finishing order. The browser predicts motion between updates to keep steering responsive, then reconciles it with the server’s state. Reconnecting players keep their room session, with HTTP fallback when the live connection is unavailable.

Cloudflare D1 stores room routing and initialization records; active race state lives in the room’s Durable Object. Session tokens and future answers stay out of public game snapshots. Computer racers use the same race engine and speed rules as human players.

Engineering focus

The project includes automated checks for race rules, synchronized questions, steering, reconnects, host permissions, room capacity, and rematches. Its key challenges are keeping multiple browsers consistent, making movement feel responsive despite network delay, and presenting trivia clearly without stopping the race.

This is a casual multiplayer game. Broader physical-device and group playtesting remains ongoing; it is not presented as a competitive anti-cheat system or a proven large-scale service.

Built with AI

I developed Trivia Turbo with ChatGPT/Codex as an AI development collaborator. I guided the game’s direction and refined the experience through feedback, while AI helped with implementation, debugging, and explanations of how the code works. We built and iterated on the project together.

The work brought together the browser racing interface, shared trivia rounds, real-time multiplayer coordination, and automated checks for game behavior. The collaboration also extended to presenting the game in this portfolio, including its gameplay trailer and technical write-up.

“Built with AI” describes our development process. During play, the game uses bundled trivia questions and programmed race rules; it does not call a generative AI service to create questions or control the computer racers.

Hosting and credits

The portfolio stays on GitHub Pages and links to the existing Sites-hosted game and its Cloudflare backend. Multiplayer coordination requires a running backend, so the game cannot be served as a static GitHub Pages export.

The game bundles its trivia and audio assets rather than calling a paid trivia or AI API during play. Its sound credits, visual credits, and trivia sources are available on the live site.