Hosting a Minecraft survival world, a Terraria server, and a Palworld host no longer means juggling SSH sessions and screen windows, because MCSManager puts every instance behind one web panel. A built-in marketplace installs game servers from ready-made templates, filtered by operating system and tagged with the Java version each one needs, while any Docker Hub image, uploaded ZIP archive, or plain process can run as an instance with its own start command, stop command, and live terminal. Docker instances get memory, CPU, port mapping, and volume settings, and each instance can auto start, auto restart, and run scheduled tasks. For Minecraft servers, the plugin and mod manager (Beta) searches Modrinth and CurseForge, and the file manager handles maps, configs, and uploads. Administrators create user accounts and assign instances to them, so friends or paying customers only see their own servers, which suits small hosting businesses that sell game servers. Extra machines join as nodes and connect to the same panel, and the drag-and-drop dashboard can be rearranged to taste. The interface supports many languages. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. Apache-2.0 licensed.