The game of the clicker genre includes 12 (11 received and 1 basic) characters. The currency is Jojo coins, used to buy new characters.
Jojo coins can be earned by clicking on an existing character. To purchase a new character, you need to have the right amount of Jojo coins, then click on the button that is located under the character picture. If you want to return the character, you can buy it again with the available coins. Each character increases the number of Jojo coins mined per click.