Gitlantis is a VS Code extension that turns the traditional file explorer into an interactive 3D ocean world. Users control a boat to navigate a seascape where directories appear as lighthouses and files as buoys, making code exploration more engaging. The extension communicates via webview with a React Three Fiber interface, offering features like branch switching, file opening, and settings customization. It also supports a standalone browser mode for demo purposes using sample data. Architecturally, the extension consists of a VS Code extension host that handles workspace and Git operations, and a rich webview application built with React 18, Three.js, React Three Fiber/Drei, and Zustand for state management. The 3D scene includes dynamic ocean tiling, boat physics (using React Three Cannon), collision-based node interaction, a compass, minimap, and ambient audio. The UI layer provides splash screens, loading states, settings modals with multiple tabs, and mobile joystick support. The codebase demonstrates modern frontend practices and creative use of 3D in a developer tool. However, it has several maintainability concerns: many @ts-expect-error comments for Three.js types, hardcoded demo data for browser mode, a complex dual-build setup, and no automated tests. Some components, like the settings modal and the dynamic backdrop, are well-abstracted and potentially reusable in other Three.js projects.