===Shrine of Challenge===
[[File:Shrine of Challenge.jpg|thumb|right|180px|The Shrine of Challenge]]
The Shrine of Challenge is not available until the player unlocks it by entering [[Qi's Walnut Room|Mr. Qi's room]] on [[Ginger Island]] and completing the "[[Quests#Danger In The Deep|Danger In The Deep]]" quest.
Thereafter, the Shrine of Challenge is located on floor 120 of the Mines. It acts as a toggle switch, alternating the strengths of The Mines , [[Skull Cavern]], and [[Quarry Mine]] enemies between normal levels and "dangerous" levels. ''The toggle does not change strength levels until the following day.''
While the dangerous setting is active, [[Radioactive Node]]s can be found in the Mines, from which [[Radioactive Ore]] can be obtained.