Moddio is a Multiplayer-First Game Engine. It has a built-in server-authoritative netcode, including snapshot interpolation and client-side reconciliation. It can support 50+ concurrent players or 300+ moving entities hosted on a $5/month VM. Join us on Discord
- Box2D Physics
- Server-authoritative netcode using Websocket, Snapshot interpolation, Client-side reconciliation, and LZ-string compression
- Inventory & Item system
- Built-in Attributes (e.g. HP, Energy, etc) with regeneration rates
- Built-in Item system (melee & projectile)
- Dialogues (ideal for visual novel-style games)
- Shops (for selling items)
- Unit control (top-down WASD or platformer)
- Client-side predicted projectile + unit movement (optional)
- Unit AI including A* pathfinding
- Mobile controls
- and more!
Make sure you have Node 18 or later. First, setup the repo
git clone https://github.com/moddio/moddio2.git
cd moddio2
npm install
Then, go to /src directory, and rename game-sample.json to game.json. Go back to the root directory and run the command below:
npm run server
You can now play the game at http://localhost:80
Moddio games are created & edited using Moddio Game Editor available at https://www.modd.io. To learn how to use the game editor, visit https://learn.modd.io.
Once you create the game, you can export the game.json which you can use in your local installation.
Inside the Moddio Game Editor, Go to Menu -> Click Export Game.
Moddio is completely free and open source under the MIT license, and we are always looking for more contributors. To learn about how to become a contributor, please visit how to contribute page