Introduction to Detris: Web-Based Tetris Using Deno

by Hexagon, 2 minutes read deno tetris guide deno-tetris-guide

Welcome to the first part of our journey in building Detris, a web-based Tetris game using Deno. In this article, we'll introduce you to the classic game of Tetris and explain why I chose Deno as our runtime. We'll also give you a sneak peek into the special features of Detris, like single-player mode, multiplayer functionality, and even AI opponents. Get ready to dive deep into the world of Tetris, powered by modern web technologies!

What's Special About Detris?

Detris stands out through:

  • Server-side stateless Tetris implementation in Deno TypeScript
  • Multiple game modes including Single Player, Co-op, and PvP
  • "Intelligent" AI opponent for multiplayer practice
  • Highscore tracking and leaderboards
  • Lightweight, lazy HTML5 client for gameplay
  • Deno KV utilized for data persistence
  • Pure Deno / Deno KV / Deno STD application without frameworks or dependencies. Uses all default settings for type checks, formatting and linting.
  • Special moves. Supports special moves like most good Tetris-implementations, like floor kicks and wall kicks.

Why Deno?

Deno is a JavaScript and TypeScript runtime, similar like Node.js. But it has some cool features like better security and a built-in package manager. I chose Deno for this project because it's modern and really easy to use.

If Deno is new to you, I recommend reading this short article first - Getting started with Deno (

What's in This Series?

This series will guide you through creating your own version of Detris, step-by-step. Here's the plan:

  1. Setting Up the Project: How to get Deno up and running and what are the main files in the project.
  2. Building the Frontend: How the game looks and how it talks to the server.
  3. Implementing Single-Player Mode: Making the basic game work.
  4. Adding Multiplayer: How to play with others online.
  5. Creating AI Opponents: Adding computer players to the mix.
  6. Running the game and Future Plans: Summary and what you could do next.

When you've walked through all parts, you'll hopefully have your own version of

So let's dive in and make an awesome Tetris game with Deno!

Setting Up the Project: Main files and Dependencies