OhMaBubble (demo)

Tap a bubble to make it grow. Tap the biggest size and it pops, shooting droplets in four directions. Bubbles hit by droplets grow or pop too, and the chain keeps going. Every pop plays the next note of a song.

This demo has the first two chapters: 24 levels and their encores, with Twinkle, Twinkle, Little Star and Lightly Row. Clear the board in as few taps as you can for three stars, and each level you clear paints more of the chapter's picture.

The full game has 60 songs and 720 levels, a daily puzzle and more. It's free on the App Store and Google Play, and you can move your demo progress into the app.

Works with a mouse or a touch screen. Sound on.