What problem does it solve? Building standard game features like inventories, shops, rankings, or dialogs from scratch in MapleStory Worlds wastes effort when official prebuilt packages already exist. This Skill checks the MSW-Git/MSWPackages catalog first and guides integration instead of zero-from-scratch implementation. ## Core Features & Use Cases - Feature-to-Package Mapping: Matches user requests (toast, ranking, inventory, shop, mail, quest, dialog, save data, and more) to one of 20 official first-party packages. - Scope-First Routing: Distinguishes whether the user needs a full system (data + logic + UI) or just a UI screen, routing UI-only work to the msw-ui-system skill. - On-Demand Fetching: Pulls package READMEs, file trees, and raw source files from GitHub only when needed, keeping the catalog current automatically. - Integration Workflow: Maps package files into the project layout, checks UUID and sprite RUID collisions, resolves cross-package dependencies, and wires package APIs into existing scripts. - Use Case: A user asks for a leaderboard. The skill matches the ranking packages, fetches both basic and advanced READMEs, summarizes the differences, and after confirmation copies the Core files into RootDesk/MyDesk while regenerating colliding UUIDs. ## Quick Start Ask the AI to check the MSWPackages catalog for a prebuilt inventory system before writing one from scratch.