https://wccftech.com/todays-list-of-paid-games-that-are-free-or-on-sale-at-the-play-store-including-paint-vr-and-more/

Poppix is a bubble-popping puzzle game where you carefully plan out how to set up chain reactions and clear the board!

Friendly for all ages, Poppix features 3 primary game modes: easy, medium, and hard, where the sizes of bubbles and numbers of starting charges are varied– and kiddie – where no score is kept and players can pop bubbles for fun or just watch as they inflate and burst themselves.