OpenRA is an Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert. Developed by OpenRA developers
License: Open Source
Warzone 2100 offers a unique blend of RTS and base-building with a strong emphasis on unit customization and a single-player campaign, while OpenRA focuses on traditional RTS gameplay with active community support and cross-platform compatibility. Warzone 2100 is better suited for players looking for depth and customization, whereas OpenRA caters to those who prefer a streamlined, classic RTS experience.