Configuring
only has a few options, which can be reached from Settings Configure KAsteroids....
Start new game with n ships 	When you start a new game, you have ships in reserve, in case of an accident ;-). This specifies how many ships you have in total when the game starts.
Show Highscores on Game Over 	If selected, shows all of the highscores each time you finish a game, regardless of whether or not you achieve a highscore.
Player can destroy Powerups 	If selected, shooting a powerup destroys it. If unselected, the powerup remains, allowing you to still pick it up.