コンプガチャ

コンプガチャkonpugacha

noun

  1. method of awarding rare in-game items in mobile games only when the player has bought a full set of other in-game items

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences