Treasure Chests are objects with rewards that can be found on the islands of Elteria. Sometimes, gems are required to open the chests.
Interaction: When the player approaches, the chest an action button appears. Pressing that button either immediately gives chest's rewards or opens the chest GUI with a list of conditions for opening a chest e.g. the number and types of gems. If the player has everything listed in the inventory, the "open" button becomes available. After opening, all items automatically fall into the player's inventory, and the chest disappears.
The type of the Treasure Chest determines its location and contents.