- ACTOR
- Player
- GOAL
- Open the Rune Ruins chest
- ENTRY
- A Ruin Shovel or the source-stated Gem option is available
- START
- A 3×3 dig board is unopened
- COMPLETION
- The second key is revealed or collected
- END
- The chest opens and the dig session ends
- 01
PlayerEnter Rune Ruins
- RESPONSE
- The system consumes the applicable entry resource and opens a 3×3 dig board
- RESULTING STATE
- Rune Ruins dig board active
- BRANCH
- Ruin Shovel or source-stated Gem option available
- 02
PlayerDig one board cell
- RESPONSE
- The system reveals the cell result, including an orb, key or other source-described board result
- RESULTING STATE
- One more board cell resolved
- BRANCH
- An unopened cell is selected
- 03
PlayerCollect the second key
- RESPONSE
- The system opens the Rune chest and ends the current dig session
- RESULTING STATE
- Rune Ruins chest opened; session terminal
- BRANCH
- The second key is revealed or collected
TERMINAL