Massive Content Revise Testing for Deep Rock Galactic is a public test branch designed for players to engage with upcoming updates of the MCR mod. This program allows users to access various work-in-progress builds, enabling them to report issues and provide feedback directly related to the mod's development. It serves as a platform for collaborative testing, enhancing the overall gameplay experience by incorporating user input.

The mod is available for Windows and is offered for free, making it accessible to a wide audience. Users are advised to avoid using this testing version concurrently with the main version of MCR, as it is specifically an updated build. Proper installation requires disabling the main version and restarting the system to ensure optimal performance of the test branch.