Copy of Gacha games - Packs with different qualities

In this diagram, we simulate in-app purchases of lootboxes of varying qualities: Cheap, Normal, Standard, and Premium, each containing a different assortment and quantity of items. 

Items within these lootboxes come with one of five rarity levels: common, uncommon, rare, epic, or legendary, with higher-tier lootboxes offering better odds for rare items. You can simulate the player gatcha experience by purchasing multiple packs, providing insights into item distribution and the probability of obtaining items of specific rarities. This simulation helps visualize player rewards across different purchase volumes, highlighting the impact of lootbox tier and item rarity.