Tiers are levels of how many crystals you need to get that much xp. There are three levels, however many crystals you need to get to get that xp. This can be used in games just for those who want to level up.
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Tiers are levels of how many crystals you need to get that much xp. There are three levels, however many crystals you need to get to get that xp. This can be used in games just for those who want to level up.