This tutorial guides developers in building a picture guessing game using Twilio's APIs for messaging and serverless computing. The game uses QuickDraw!, an online drawing game by Google, as its data source. The application deploys an animated GIF from the QuickDraw! dataset to Twilio Serverless API, hosts it, and sends text messages with instructions and options to users via Twilio Programmable Messaging API. The user's responses are received through a webhook configuration in the Twilio Console, triggering the game's logic, which includes sending countdowns, handling incorrect guesses, and congratulating correct answers.