Genshin Impact is an open world action role-playing game that features the player controlling one of four interchangeable characters in a party. Switching between characters can be done quickly and during combat, allowing the player to use several different combinations of skills and attacks at once. Characters may have their strengths enhanced in various ways, such as increasing a character's level and improving artifacts and the weapons that the character equips. In addition to exploration, the player can attempt various challenges for rewards. Scattered across Teyvat are highly powerful enemies and domains that reward highly valuable resources, but claiming them uses up a currency called resin, which slowly regenerates over time. Completing these challenges grants the player progress towards increasing their Adventure Rank, which in turn unlocks new quests, challenges, and raises the World Level. The World Level is a measure of how strong the enemies within the world are and the rarity of rewards that defeating them gives.