Forced to watch ads or given rewards for watching ads.
"Advertisements only exist once the player crashes and are completely optional. Watching an ad will reward the player with double the coins they've earned. The player typically earns 5% of their score in coins once they crash - for example, scoring 700 points will only give the player 35 coins. This tempts the player into watching an advertisement since coins are given conservatively."
"Getting rid of intrusive ads is a one-time purchase of $2.99. You can choose to watch more ads for more in-game currency for aesthetics."
"not intrusive, but they have had 3rd party advertisements like jojo siwa, spirit the stallion, h&m etc"
"daily energy refresh, additional tournament attacks, multiple shops have ads to refresh them"