Querz

Querz is an independent software publisher whose work is distributed through its GitHub presence, where it maintains open-source tooling aimed at players and administrators of the sandbox game Minecraft. The publisher's catalog currently consists of one flagship product, MCA Selector, a dedicated utility for managing Minecraft world data at the chunk level. MCA Selector enables users to browse the contents of a world save, visually select individual chunks or large regions, and then either delete those selections or export them for use elsewhere. This functionality addresses a range of common use cases within the Minecraft community: server operators can prune unused or corrupted chunks to reduce world file sizes and improve performance, map creators can isolate and export specific builds or terrain for reuse in other projects, and players migrating between game versions can trim outdated areas so they regenerate with newer content. As a world-editing and maintenance tool, the software fits within the broader category of game utilities, specifically save-file editors and world management applications. Typical users include hobbyist server administrators, technical players, and content creators who need fine-grained control over world data without manually editing low-level region files. By focusing on a single, well-defined problem, Querz offers a specialized solution rather than a broad productivity suite, and its distribution through GitHub aligns with the open-source model common among community-driven gaming tools, allowing users to inspect the source code, report issues, and contribute improvements directly to the project.