       Xkobo  is  a  single player action game. The play is quite
       simple. Your object is to destroy all the fortresses.  You
       can control your ship by pressing the cursor keys (or mov-
       ing the mouse cursor), and  shot  beams  by  pressing  the
       SHIFT  key  (or  the  left  mouse button). The game can be
       paused by pressing 's' (or the right mouse button).
