Basic instructions:
  It's Galaga, you know how to play Galaga, stop bothering me.
 (The ship follows the joystick, the button fires.  Auto-fire by holding
 it down!)

Keyboard Controls:
  left_arrow  - move left
  right_arrow - move right
  space_bar   - fire
  p           - pause
  q           - quit game
  s           - sound toggle

Command line options:
  -scores              Show high scores and exit
  -nosound             Turn sound off
  -level <level>       Set starting level to <level>
  -window              Start in windowed mode
  -winsize <WxH>       Window size (default 468x596)
  <anything else>      Show usage and version