I Built an AI That Judges Your Drawings

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Here’s what happened when I got tired of unfair drawing games

The Problem Was Driving Me Crazy

You know those online drawing games? The ones where you spend five minutes making a perfect cat and nobody guesses it. But then your friend draws three lines and wins because their buddy “gets it.”

That happened to me one too many times.

So I built something different. An AI that judges your drawings instantly and fairly.

Here’s How It Works

The AI looks at your drawing and gives you a score in seconds. No waiting for people to guess. No politics. Just you vs the art judge.

You can play with up to 7 friends at once. Everyone draws the same thing. Best score wins.

And you can watch everyone else draw while you’re drawing. It gets intense.

Try it here →

The Technical Stack

Built this as a web app using Next.js 14 and WebRTC. Here’s what it does:

Real-Time Canvas Synchronization

8 simultaneous HTML5 canvases streaming drawing data via WebRTC
Sub-100ms latency for stroke replication across all clients
Delta compression for drawing events to minimize bandwidth
Canvas state recovery when players drop/rejoin mid-game

WebRTC Data Channels

Peer-to-peer drawing data transmission
Voice chat integration (optional)
Connection fallback through TURN servers
Handles network drops gracefully

AI Integration

Canvas-to-image conversion on the client
Real-time image analysis via REST API
Multi-criteria scoring (accuracy, creativity, technique)
Confidence intervals for edge case handling

Live Commentary System

Azure Speech Services for text-to-speech
AI-generated commentary based on drawing progress
Real-time narration of player actions and scores
Dynamic voice modulation for different game events

Game State Management

Server-authoritative scoring and timing
Real-time leaderboard updates
Player authentication and persistence
Room management with invite codes

Performance Optimizations

Canvas virtualization for memory efficiency
Selective rendering updates (only dirty regions)
WebGL acceleration where supported
Smart throttling of drawing events

Current Status: Beta & Looking for Feedback

Right now Artbitrator is in beta. The core tech works – you can draw, compete, and get AI scores in real-time. But I’m actively looking for feedback from other developers.