Yueyue Chunk Editor

Yueyue Chunk Editor

A visual offline editor for saved Minecraft worlds, developed by Yisibite. Open it from the title screen, load a world and inspect its saved terrain before selecting chunks.

Features

• Copy or move selected chunks within a world or paste them into another world or dimension. A ghost preview and confirmation appear before writes; occupied destinations require replacement confirmation.
• Delete selected chunks or filter by recorded residency time. Confirmations, operation protection copies and undo/recovery records are retained.
• Inspect saved block terrain, height-limited overhead views, horizontal slices, biomes and Java Edition slime chunks, plus selected data sizes and loading progress. This is a saved-data viewer; it does not generate or predict unexplored terrain.
• Left-click selection, Shift multi-selection/drag selection, context menus, zoom and edge panning. Respects the Minecraft GUI scale.

Requirements and use

Minecraft 26.3, Java 25, Fabric Loader 0.19.5+ and Fabric API. Edit worlds while they are closed. Back up important worlds first; arbitrary custom mod NBT coordinates cannot be guaranteed to relocate automatically. No personal world or settings are bundled. Complete corresponding source is attached separately.

References and credits

The biome-map presentation is visually inspired by Cubiomes Viewer, by Cubitect and contributors. Cubiomes is credited as its related biome-generation library. This editor reads saved chunk NBT using its own reader; these links describe the visual reference, not a bundled Cubiomes generator. Minecraft/Fabric interfaces and Java Edition slime-chunk rules retain their upstream identities. See REFERENCES.md and THIRD_PARTY_NOTICES.md in the source archive for precise attribution. Yueyue code is developed by Yisibite with AI assistance.

中文

月月存档区块编辑器mod：主界面入口，可视化查看真实已保存地形、限高俯视及截面，跨存档/维度复制和移动区块，虚影粘贴与替换确认、批量删除、驻留时间筛选、空间统计和读取进度。重要存档请先备份，操作前关闭存档。群系地图显示风格参考 Cubiomes Viewer，读取的是已有存档数据，不预测未探索地形。