libGDX

libGDX is a cross-platform Java game development framework based on OpenGL (ES), targeting Windows, Linux, macOS, Android, web browsers, and iOS. It is a code-based framework with no bundled visual editor: you write your game in Java and the same codebase runs everywhere. Unlike heavier engines, it imposes no specific design or coding style.

libGDX gives you a comprehensive toolset for multi-platform 2D and 3D game development. A setup tool automates project creation and pulls in the needed components, and because Gradle handles dependencies, you can scaffold a project without downloading the framework manually. Javadocs are available online and bundled with every distribution.

libGDX is released under the Apache 2.0 License, free for both commercial and non-commercial use, and is maintained by its developer community. A large third-party ecosystem of tools and libraries has grown up around it.