2.4. Useful Keystrokes while playing

ARROWED KEYS: to move the Spaceship

SPACE: to shoot.

CTRL: to acquire an activated option.

ESC: to display the menu (You come back to the play with a second stroke on ESC).

P: to pause the game (a new stroke on P and you resume the game).

F: To change from the Full screen view to the windowed).