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 16 or later. First, setup the repo
git clone https://github.com/moddio/moddio2.git
cd moddio2
npm install
npm run tsc
Then, to start the server run:
npm run server
You can now play the game at http://localhost:8080
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.
After creating your game, you can export the game.json file for use in your local installation. To do this, navigate to Menu in the Moddio Game Editor and click Export Game.
Next, rename the downloaded Game JSON file to game.json and move it into the src directory.
To load your game file, simply start the server by running:
npm run serverYou will be presented with a dropdown menu, where you can use the arrow keys to select your game file. Alternatively, you can pre-select your game file by running:
npm run server --game=game.jsonModdio 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