To change the application settings, select Settings ▸ Preferences. This opens the Preferences dialog. All preferences are automatically saved and applied as you change them.
The properties in the Game tab are:
This controls the speed of the worm.
Selecting this causes the level advancement to happen in random order.
When enabled, this allows for two blue diamonds on the screen at a time. One diamond makes you shrink instead of grow when eaten.
Controls the use of sound in the game.
Which level to start with. Use this if you want to jump immediately to a challenging level.
There is room for up to six players.
There is room for up to six AI players. Note that the total number of human and AI players must be less than or equal to six.
The properties in the Worm 1 through Worm 6 tabs let you set individual preferences for the different worms.
This list let you change the keyboard controls for the given worm. To change a control, double click on the appropriate entry and then press the key you want to use for that control.
Rather than left sending your worm toward the left of the screen, right toward the right and so on, the left and right keys make the worm perform a left or right turn. For example, if the worm is moving to the left and you press the left control it turns to head toward the bottom of the screen.
Customize the color of your worm so you can tell it from your opponent's worm in multi-player mode.