DragonRuby Game Toolkit

DragonRuby Game Toolkit is a commercial-grade, data-oriented 2D game engine, suitable for beginners and experienced developers. It's lightweight, fast, and cross-platform, supporting PC, Mac, Linux, Raspberry Pi, and Web. The engine features simple APIs, enabling the creation of complex 2D games, and is highly optimized for performance by Ryan C. Gordon, co-creator of SDL. With a Standard License, developers get access to the aforementioned platforms and continuous updates.