Polychrome might be one of the most important resources to acquire in Zenless Zone Zero since it’s the main currency you’ll need to purchase rolls for new characters and weapons in the game.
This type of currency is relatively difficult to come across in the game, though you can acquire plenty of Polychrome at the beginning of the game to get yourself at least 100 free pulls from the Signal Search gacha. Overall, however, there are only a few ways to acquire Polychrome to use for your collection of characters.