Zwingo

Swingo your ball around to smash the black balls out and protect the white ball in the centre. As you hit each ball out you gain experience points (xp). The harder you hit the ball, the more xp you collect. At the end of each level you can spend this xp on one or more of four upgrades - size, speed, white ball size and boundary area. You'll need to upgrade to face faster, bigger balls and make it all the way past level 50 to pass the game.