Loot crate

Loot crates, also known as loot boxes are packages of in-game items typically bought with real-world currency. The items in each crate may be picked at random by the game's internal algorithms; or, they may be fixed packages of currency that attach one or more additional exclusive items, with the expectation that the player will open the crate or spend the added currency in gacha for a chance at rare items, while also awarding the extra item(s) offered in the crate.

Tied with gacha in theory, loot crates are equally as contentious an issue in online gaming as gacha itself, since paying for a loot crate does not often guarantee that the player will win a desired item; in many respects, the practice draws comparisons to gambling, and is just as risky. Despite this, several titles in the Final Fantasy franchise, particularly free-to-play mobile games, make use of loot crates as a component of their revenue models.