noun
loot box
In video games, a virtual container that gives random items when opened, often purchasable with real or in-game currency.
See also: ガチャ
このゲームでは、ルートボックスからレアアイテムが出ることがある。
In this game, rare items can sometimes come out of loot boxes.
Variant with interpunct; less common but seen in some contexts.
ガチャ (gacha) is a broader term for random-item mechanics, often used in mobile games, while ルートボックス specifically refers to the container itself, typically in Western-style games.
Borrowed from English 'loot box'.