loot box

noun2

1. •
   A consumable virtual item, often in the shape of a box or another container, that gives a player a random selection of in-game items.

   • Admittedly, the loot boxes first of all monetize video games, by reinforcing the pay-to-win logic, but they also contribute to their gamblification (Johnson 2018), […] — 2021
2. •
   A subscription box, particularly one that provides a random assortment of apparel and merchandise.