TITAN

Keyboard/Joystick..........F2
Sound on/off...............F3
Stop game..................F5
Pause/Restart..............F10
Decrease speed.............SPACE BAR

You must finish 80 stages one  by  one,  either by eliminating all the
obstacles on the  screen  or  by  hitting  the  EXIT  element with the
sphere. You will lose a life if the control unit hits a white skull, or if the
power sphere hits either a white or green skull. The power sphere can pass
through red obstacles but not through green obstacles.
The control unit can pass through green obstacles but not through red
obstacles. One element has an extraordinary feature: the Energiser (marked
with a shaded blue E). If it gets hit  by  the control unit, the positions of
the power sphere and control unit are immediately exchanged. There are
indestructible obstacles that can  be moved with the control unit by pushing
them one at a time.  Well used, they will allow you to open or close certain
paths on purpose.
The blue spots are  oil  spots  which  prevent  the  control unit from
changing direction before  hitting  another  obstacle.  Some obstacles
become solid after the control unit has crossed over several times.