hytopia-sdk

HYTOPIA SDK

Quickstart

• Install the SDK in a new or existing Node.js, Bun (recommended) or Deno project.

npm install hytopia

• Run a local HYTOPIA server using an example game included in the SDK. The following command will start the Zombie Arena example game on port 8080.

npx hytopia examples/zombie-arena

• Visit https://play.hytopia.com - when prompted, enter the local server your game is running on, which is http://localhost:8080.

What is HYTOPIA?

HYTOPIA is a modern games platform inspired by Minecraft, Roblox, and Rec Room.

HYTOPIA allows you to create your own highly-sharable, immersive, massively multiplayer games in a voxel-like style. All playable in a web browser on any device!

What is this SDK?

The HYTOPIA SDK makes it easy for developers to create multiplayer games on the HYTOPIA platform using JavaScript or TypeScript.

Available as a simple NPM package, this SDK provides everything you need to get started:

• Compiled HYTOPIA Server: The ready-to-use server software.
• Game Client & Debugger: For rapidly testing and developing your games.
• TypeScript Definitions: For strong typing and code completion.
• Documentation: Detailed guides and references.
• Default Assets: Textures, models and audio you can use in your games.
• Game Examples: Sample projects & scripts showing how to build different types of games.

With these resources, you can quickly build and share immersive, voxel-style multiplayer games on HYTOPIA.

Architecture & Motivation

HYTOPIA gives developers full control to create any game imaginable in a voxel-like style. The underlying architecture handles low-level tasks like networking, prediction, entity lifecycle, physics and more, so you can focus on building and deploying games quickly.

With HYTOPIA's 100% server-authoritative setup and overall implementation, games are default-deterministic. All game inputs by players are relayed to and verified by the server, making gameplay naturally anti-cheat and preventing exploits like position spoofing.

HYTOPIA overcomes the creativity limits of Minecraft, the complexities of Unity and UE5, and the difficult developer learning curve of Roblox with a developer-first, flexible approach, enabling you to build games in hours using JavaScript or TypeScript.

Bring your own game assets as GLTF models with full server-driven animation support, block textures, ambient and sfx audio, and more - or use HYTOPIA's defaults included with this SDK to craft your game.

We built HYTOPIA to empower both veteran and aspiring game developers to create multiplayer-first, voxel-style, hyper-sharable games. Developer APIs and documentations are simple, powerful and clear. Whether you've been building games for years, a frontend web developer who's dreamed of building a game, an eager learner that's always dreamed of building games, or a curious school student, HYTOPIA was built for you..