GDevelop with Firebase Tutorial - Multi-User Chat

Connect your GDevelop games to Firebase for secure, real-time multiplayer chat, authentication, and database services!

This comprehensive, step-by-step tutorial walks you through integrating Firebase Authentication, Firestore Database, and Cloud Functions directly with GDevelop. Whether you are building an online lobby, a global co-op chat, or looking to learn how to secure client-to-server operations, this guide covers everything from initial cloud setup to production-ready security rules.

Important Billing Note: To deploy Cloud Functions (Step 8 onwards in the guide), Google requires you to upgrade your Firebase project to the Blaze (pay-as-you-go) plan, which requires a credit card. Firebase offers a highly generous free tier (e.g., 2 million invocations per month free), meaning you are extremely unlikely to incur charges for this tutorial, but billing details are required by Google to enable serverless features.

What's Inside:

• Pre-made UI Templates: Ready-to-use GDevelop scenes (CREATE account, LOGIN user, and CHAT lobby) so you can focus strictly on backend configuration.
• Secure Authentication: Set up email/password registration and manage active user sessions.
• Real-Time Firestore Database: Synchronize messaging instantly across multiple game clients.
• Serverless Cloud Functions: Deploy server-side Node.js logic to process messages safely, preventing client-side tampering.
• Security Rules: Secure your database from unauthorized reads and writes.

Technology Stack:

• Frontend: GDevelop (HTML5 Game Engine + Visual Events)
• Backend: Firebase (Auth, Firestore, Cloud Functions)
• Deployment Tools: Firebase CLI (Node.js)