The spanner icon at the top right hand side is 'settings' from top left to bottom right;
1} Sound ~ allows you to turn the sounds on or off.
2} Music ~ allows you to turn music on or off.
3} Save Game ~ allows you to make a save point progress in the game.
4} Zoom Out ~ allows you to zoom out for even more of a greater visual experiance.
5} Zoom in ~ allows you to zoom in for greater visual experiance.
6} Quality ~ allows you to change the graphic's quality to high quality, medium quality, and low quality. Low quality can help with faster game play.