Here you can choose one of four different line styles to be used for drawing the snakes. The names of the styles are self-explanatory: , , and .
Use this slider to define how broad the trail of a snake should be. Moving the slider towards the left will make the trail more narrow, moving it to the right will result in a wider trail.
Here you can define the appearance of the playground's background. If you prefer a simple solid color, select the Color: option and click on the button at the right of it to open a convenient color-selection dialog.
You can also choose a background image for the playground. To do so, select the Image: option, and then provide the filename of a wallpaper image to use in the input field at the right. Alternatively you can click on the little button at the very right to open the well-known file-selection dialog.
Click on the colored rectangle to open a color-selection dialog which lets you define the color to be used for the snake of the first player.
Click on the colored rectangle to open a color-selection dialog which lets you define the color to be used for the snake of the second player.