Select your theme, swipe your finger up, group the same items and "whooopppsss", you have got a new item.
Now try regrouping again with this new item. By the way, be careful not to stay under the border.

Earn bombs by earning points.
Use bombs as soon as you get stuck.

Just try and see what happens..
The game seems easy but all is not as it seems, but still you can choose the difficulty level.

By the way, You can also play with different types of elements by changing the theme.