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Open Source Gaming Tools

A curated collection of the best open source tools and platforms for building and playing games, including engines, level editors, asset pipelines, and game servers..

Free 2D and 3D game engine for cross-platform projects
  • Stars

    118,751
  • Last commit

    10 hours ago
  • License

    MIT
Build 2D, 3D, and XR games with a full-featured engine that includes its own scripting language, scene editor, and export tools for multiple platforms.

Open Source Alternative to:

Create 2D and 3D games without coding, powered by AI assistance
  • Stars

    Stars growing over the last 30 days27,766
  • Last commit

    9 hours ago
  • License

    Unknown
Free, open-source game engine with visual event system, AI tutor, and one-click publishing to Steam, iOS, Android, and web platforms.

Open Source Alternative to:

Free, open-source framework for cross-platform game development
  • Stars

    14,550
  • Last commit

    9 days ago
  • License

    Unknown
Build games in C# that run on Windows, macOS, Linux, iOS, Android, and major consoles. No royalties, no subscriptions, no runtime fees.

Open Source Alternative to:

Build and play games inside a game engine that runs live
  • Stars

    6,496
  • Last commit

    6 hours ago
  • License

    MIT
A game creation platform built on Valve's Source 2 engine, letting you build, share, and play games without leaving the environment.

Open Source Alternative to: