spigot-base/design/user-stories/us-003-expand-the-base.md

type, title, description, status

type	title	description	status
User Story	US-003: Expand the base	Let players expand their base radius through sequential stone, deepslate, and obsidian mining milestones.	done

US-003: Expand the base

As a player with Base I, I want mining milestones to expand my base so that more of my build receives base benefits.

Acceptance criteria

• Base-size progression is unavailable until Base I is unlocked.
• Only qualifying blocks broken in Survival mode count.
• The first expansion requires a configurable 500 STONE and changes the radius from 10 to 25 blocks by default.
• After the stone tier, the second expansion requires a separate configurable 1,000 DEEPSLATE and changes the radius from 25 to 75 blocks by default.
• After the deepslate tier, the third expansion requires a separate configurable 1,000 OBSIDIAN and changes the radius from 75 to 150 blocks by default.
• Stone, deepslate, and obsidian variants do not count by default.
• Materials mined before their sequential tier becomes active do not count toward that later tier.
• Player-placed qualifying blocks may be mined repeatedly for progress.
• Expansions affect the cylinder's horizontal radius without independently changing its vertical bounds.
• Relocating the base preserves earned size tiers and counters.

Related

• US-001: Unlock and establish Base I
• US-004: Unlock and control base flight
• US-011: Configure and persist progression