ガチャ

ガチャgacha

noun · noun, used as a suffix

1. capsule toy
2. vending machine toy
3. gacha
4. loot box
5. loot crate
6. system of selling random in-game items in video games (similar to how capsule toys are sold)
7. lottery (i.e. something decided by chance)

Study it in Yanamino