Shoot the aliens

                keyboard

         I                   W
  aim  J   K  aim  shield  A   S shield
         M                   D

              space to fire


Esc* * * * * * * * * * * * * * * * pause

Ctrl-S * * * * * * * * * * * * * * sound

Ctrl-R * * * * * * * * * * * * * restart
[eof]