https://wccftech.com/todays-list-of-paid-apps-and-games-that-are-free-at-the-play-store-for-july-31st/

Free apps, games and icon packs.

DOX is an original puzzle game in which you must learn the unique rules of each button type to remove them all from the grid. Tap, drag, swap, fill, destroy, and erase your way through story mode, then hone your DOX skills with endless puzzle mode