the player controls pokémon, battling other pokémon in a series of dungeons and closed arenas. the player starts off with a low-level pokémon that has only one attack. as the player battles other pokémon, the player can collect coins which can be used to buy new attacks and get new pokémon. when the player gets a pokémon of a high enough level, the battle royale room opens, where the player battles many pokémon at a time in a closed arena. the player has to beat all of the pokémon to get a higher rank. as the player gets higher ranks, they can battle stronger pokémon, including legendary pokémon.