Modd.io is a web-based HTML5 game engine for creating and playing multiplayer projects without downloads, requiring only a free account to start building.

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Get a dedicated desktop app for Modd.io on Mac, Windows, and Linux with WebCatalog Desktop.

  • Launch Modd.io directly from your Dock or taskbar.
  • Work without distractions in a dedicated window, separate from your browser tabs.
  • Manage multiple Modd.io accounts and switch between them without logging out.

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For aspiring game creators and small teams, Modd.io provides a browser-based HTML5 engine for making multiplayer games without building the technology from scratch. Its collaborative editor lets people work on a game together in real time, making it useful for learning game creation, prototyping ideas, or building custom worlds with other players. No software download is required to get started in the browser. You can also browse and play games made by the Modd.io community, join multiplayer sessions, and chat with other players. It suits people who want both a lightweight game-making tool and a place to try community-created multiplayer games.

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