Solar2D is a free development engine designed for creating games and applications across various platforms such as iOS, tvOS, Android, Android TV, macOS, Windows, Linux, and HTML5. Built on Lua, Solar2D offers a lightweight, fast, scalable, and powerful environment for creating diverse projects. It is an open-source engine, derived from the now inactive Corona SDK Game engine, providing ample capabilities for iterative development.

The engine supports a wide range of plugins for integrating features like ad displays, multimedia content, and analytics. Additional plugins can be accessed through its marketplace. Solar2D prioritizes user privacy by not tracking any user activity or collecting aggregated data, ensuring that no calls are made to external servers without developer intervention.