Lootboxes are an important part of Trove, since there is some items that you can obtain only from them. They are boxes and when opening them you have a chance to acquire rare items and save on crafting resources.
They can be obtained in many ways: dungeon farming, weekly bonuses, purchasing, events, etc.
There are premium lootboxes that can be only obtained from the in-game store (“N” button). These lootboxes usually drop the common necessaries and needed items for leveling up.