The goal of the game is to get rid of all the bubbles at the top of the screen. You do this by firing a bubble from the bottom of the screen against the same colour bubble(s) at the top of the screen. When your bubble makes a connected group of at least 3 bubbles of the same colour, that group all pops. If your bubble hits another colour, or only makes a group of 2 bubbles, then your bubble simply sticks. You lose when the bubbles reach the bottom of the screen.

At the bottom of the screen you'll see a blue line. If you drag your finger left or right below the line, you'll aim the firing direction of the currently loaded bubble. To fire, tap the area above the blue line.

To practice, press the Menu button then "Don't rush me". This will eliminate the timer

The game is a great way to waste time

BTW: When asking for help, it's recommended that you post in the "enTourage eDGe Help" forum. If it's about a specific app, you can post in the "Apps" forum.