GrowingBoxMod

Growing Box Challenge is a singleplayer Minecraft challenge mod that traps the player inside a small, expanding square border and turns progression into a block-based quest system.

You begin at Stage 0 inside a 1×1 area, with the border centered on your spawn position. At each stage, you are given a quest to break a specific type of block that exists within your current border. Completing the quest expands the playable area and advances the stage.

The border expands horizontally only, allowing the player to dig up or down freely inside the square. All progress is persistent per world, and the mod is designed specifically for singleplayer survival.

This mod is intended as a self-contained survival challenge and works out of the box with no configuration required.