Your goal is to break all the glass tiles on screen! To do this, click on a glass tile with a white arrow to push this tile into the others to break them. The arrow will indicate the direction that this tile will smash in.

After a few levels, there will be white lines that some of the tiles may be moved along. Left Click and drag your mouse along the lines to move it to a new position. 

Circular nodes along the lines indicate where a tile can be slid to. Some nodes will have a swirling blue pattern on top of them - leaving a tile on top of these nodes will rotate it ninety degrees clockwise.

In later levels, there will be tiles that glow orange. You have to push into these tiles twice to break them.

To open the main menu, click on the circle in the top left corner of the screen. You can change the glow of the tiles by clicking on the palette and adjust the sound settings. To go back to the current level, click anywhere on the screen to close the menu.