Energy is the amount of magical energy a player has. This energy is spent on magical items and will deplete when you use said items. When you run out of energy, no more magical items may be used, as there's too little left to perform the action. Energy, unlike health, regenerates slowly over time.
Energy may be lost to magical items. In version 0.9.3, the only magical items are staffs, such as the Sapphire Staff, the Ruby Staff, the Emerald Staff, the Amber Staff, the Rod of Water or the Rod of Poison.
Energy is slowly regained, but there are still ways to speed this regeneration up. There is but one way to do this.
Armour and Equipment
In the game, 4 sets of armour that may speed up energy regeneration; the Sapphire Set, the Ruby Set, the Emerald Set and the Amber Set. These set have +2, +6, +10 and +14 energy regen, respectively. The Amber Set increases the energy regen so well, it almost doesn't allow the Energy bar to deplete.
Additional game mechanics