Devils
From Empire Craft Wiki
You can check the Devils around your city by clicking the button [Map] in the game interface
Monster Varieties: Merman Troop, Harpy Troop, Devil City
Monster Distribution: Merman Troop, Harpy Troop, Devil City are around the players’ cities. You can not establish new cities on their land~
Monster Battle Effectiveness: The further you march and the higher level of the hero you chose, the stronger the devils will be.
Attack the Devils: You can [Attack] and [Mark] but not [Investigate]
The Devil City will be destroyed after being defeated, and into a status of restoring. It will refresh the place with every one to two hours.
Merman Troop and Harpy Troop will disappear after being defeated, and it will be refreshed at a certain area with every 30mins to 60 mins.
※ The area refreshed is larger than the visible map on the screen. So if there is no monster on the map of the visible screen, you just need to move the map and have a check nearby.
Rewards: Defeating devils helps you accomplish some quests. Heroes can gain EXP in the battle to upgrade themselves and also have the chance to obtain treasure chests.
The stronger the enemy you’ve defeated, the higher rate of obtaining good treasure chests will be after the battle.
Treasure Box Varieties: Simple Wooden Treasure Chest, Leather Treasure Chest, Bronze Treasure Chest, Silver Treasure Chest, Gold Treasure Chest and Magic Chest.

