This edition of the TANKS shows you how to build a real time multiplayer tank shooter using NodeJS and Socket.io platform. Node.js is a popular JavaScript runtime platform that features an event-driven, non-blocking I/O model for real-time applications. Socket.IO is a popular library for Node.js that provides a real-time transport between the web browser and the Node.js server. By default, Socket.IO tries to connect with WebSocket protocol for better performance.