Mighty Moose Core for ECO is a free mod designed for Windows that enhances the gameplay experience in the ECO game environment. It provides essential functionality such as version checking, configuration management, and persistence systems, allowing developers to share code efficiently across various mods. The core is open-source, enabling users to access and contribute to its development on GitHub. Installation is straightforward, requiring users to simply unzip the archive into their server's root directory.

The mod includes a variety of commands that facilitate server management and player interaction. Features like announcing messages, displaying trade options, and customizing skill information enhance gameplay dynamics. Additionally, it offers a set of plugins developed by the Mighty Moose team, such as Discord integration and automated server management tools. Overall, Mighty Moose Core for ECO serves as a robust foundation for modding within the ECO game, streamlining processes for both players and developers.