This means that this article is not finished and needs to be expanded. Help the wiki by editing it.
Explanation[]

This is an example of the Quests tab.
Quests are randomly assigned tasks to the player. This consists from killing mobs to crafting. This could be found in the "Quests" tab in the profile page, as shown in the right. Four quests at maximum can be displayed.
These quests, once completed, will present the player with a random amount of rubies. The rubies will be added to the player's inventory, and the quest that was completed will be removed from the quests bar. A new quest is created to replace the one completed.
The quests have a completion percentage (%), date of expiration, difficulty level, and the task to be completed (for example, killing mobs, placing blocks, etc).
When the quest is completed, if there is no space the inventory, the rubies will be rewarded when there is. This can be abused for ruby magic shows to scare the devs (not tested)
Past Issues[]
It has been widely known to be difficult to understand the task a player has to do in order to get a reward. For example, cows will not show as: Cow. Instead, it will be displayed with its entity ID, making it very confusing for new players. A solution is to guess what the ID is, or to go around killing things until you see the message of the achievement progress.