Coin per minute:
|Lvl. 1||Lvl. 2||Lvl. 3||Lvl. 4||Lvl. 5||Lvl. 6||Lvl. 7||Lvl. 8||Lvl. 9||Lvl. 10|
|Lvl. 11||Lvl. 12||Lvl. 13||Lvl. 14||Lvl. 15||Lvl. 16||Lvl. 17||Lvl. 18||Lvl. 19||Lvl. 20|
Boost Calculation Guide to use with the page linked above.
- The Subterranean Dragon was released on March 7, 2017.
- When the Subterranean Dragon was first released, despite its elements being Earth as primary and Dark as secondary, its egg was the design of a Dark primary element and Earth secondary element dragon's egg.
- On March 14, 2017, the Subterranean Dragon's egg's elements were switched from Dark and Earth to Earth and Dark.