Hero Arena is a Metaverse RPG Game inspired from the Dota2. It is a futuristic world where gamers can own heroes, train them, collect items, and combat to earn $. Mystery Hero Box is Hero Arena INO event in November. By a certain of ratio, users can randomly unbox hero from 5 different rarities: Common, Rare, Elite, Legendary, Immortal. The higher the rarity is, the more valuable the hero is.