Talk:FGO Summer 2018 Event Revival (US)/@comment-39494042-20190719020207/@comment-34364075-20190720113323

Lottery currency is the currency you need to roll a lottery in certain events.

The lottery contains prizes such as QP, skill gems, ascension mats, and mana prisms and can practically be rolled to infinity. In other words it's a prize grab.

Which is why people spend apples in these events to farm the lottery currency.