Stone

, also known as rock, was a resource in Dungeon Keeper Online and Dungeon Keeper Mobile. It was stored in a Warehouse.
== Dungeon Keeper Online ==
== Dungeon Keeper Mobile ==
===Overview===
Stone accumulated automatically in your claimed Stone Quarries. To collect the accumulated stone, the quarry was touched. Arguably, of the four collectible resources, Stone was the second most valuable due to its heavy use in upgrading walls.
Stone, along with gold, was classed as a 'grind' currency; it could be obtained over time and by routine game actions.
===Obtaining Stone===
*Stone Quarries - not very effective, though still helpful.
*Survival Raids - Only provided 250k once per week, and they could be quite difficult to complete.
*Campaigns - They could provide a lot, especially the later ones, though they were finite.
*Raiding - By far the most effective way to earn stone, this was 95%+ of your stone income.
===Storing Stone===
The quantity of stone you could store at a given time was limited by your Warehouses, Stone Quarries and Dungeon Heart.
The maximum quantity of stone a dungeon could hold was 90,001,500:
* 4 x Warehouses at level 17 (20M each)
* 4 x claimed Stone Quarries at level 35 (2.5M each)
* Dungeon Heart (1.5k)
You could also earn stone by raiding, and was dependent on how many Warehouses you destroyed, which counted for 50%, destroying the entire dungeon would provide the other 50%.
===Spending Stone===
There were several ways to spend stone:
*Building and upgrading rooms (Dark Library, Graveyard, Guard Post, Guild Lair, Torture Chamber, Unholy Temple, Workshop, Dungeon Heart, Gold Mine and Treasury).
*Building and upgrading traps and doors.
*Building and upgrading Reinforced Walls.
==References==