When hosting multiplayer game servers for communities or friends requires container isolation and low-overhead administration, Calagopus steps in as a modern game server management panel. Server operators use it to deploy and control Minecraft, Rust, ARK, Valheim, FiveM, and any other Linux containerized workload while reusing existing Pterodactyl and Pelican eggs without modification. From the live WebSocket console, administrators monitor real-time CPU, memory, and network graphs, autocomplete saved command snippets, inspect per-layer Docker image pull progress bars, and pop the terminal out into a secondary window. Managing configuration files and modpacks happens directly in the browser through a split-pane tabbed editor featuring real-time collaborative editing, side-by-side revision diffs with one-click rollback, a visual disk usage treemap, in-place archive browsing, and VS Code workspace mounting. Database workflows are equally streamlined: you can provision MySQL, PostgreSQL, MongoDB, or Redis instances, browse and edit rows or SQLite files in a built-in data explorer, and run read-only or writable SQL queries without external database clients. Automated schedules support conditional if-else branching, regex variable extraction from console output, crash-detection triggers, and eight backup storage drivers including S3, Restic, Kopia, ZFS, Btrfs, and Proxmox Backup Server. Running on a dedicated VPS on RepoCloud with guaranteed CPU, RAM, and SSD, full root SSH access, and a browser serial console. MIT licensed.