OpenRA is an open-source game engine that recreates classic real-time strategy games from Westwood, including Command & Conquer: Red Alert, Tiberian Dawn, and Dune 2000. Written in C# and built on SDL and OpenGL, it runs across Windows, Linux, BSD, and macOS, making it useful for developers interested in studying RTS game architecture, modding classic strategy games, or building their own RTS titles. Developers can use it to understand how real-time strategy mechanics work, contribute to an established open-source project, or leverage its cross-platform foundation for game development.

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