Bubble Witch Saga 2 is a bubble shooter, available for both Android and iOS. The first version of this game was really popular and was on the top charts of the app stores.
The successor, Bubble Witch Saga 2 has better graphics and a smoother gameplay. The goal of Bubble Witch Saga 2 is to make all the bubbles disappear. Do this by making sets of three or more bubbles. You're shooting colored bubbles from below the playfield. Those bubbles you're shooting should match the bubbles in the top of the playfield. It's not as easy as it sounds, the bubbles can be blocked when shooting one bubble wrong.