GamePlay
Open-source, cross-platform, C++ game engine for creating 2D/3D games
...The framework emphasizes ease of use and portability, offering native support for Windows, macOS, Linux, iOS, and Android so developers can write their game once and deploy it across many platforms. With an Apache 2.0 license, developers have broad flexibility to use, modify, and distribute their projects commercially or personally. GamePlay also includes a well-documented API, tooling for asset processing, and examples that demonstrate how to use its systems effectively, making it approachable for both indie developers and experienced programmers.