*'''moktar.dsk prehistorik.dsk''' : lag (key/joystick press lag)
*'''macadam.dsk''' : ps/2 timeout evidence (can't launch ball with keyboard)
*'''aigle_d_or.dsk''' : keyboard keys bad mapping evidence (pressing right arrow press also F3, then display "impossible" in this game in same time of moving, in fact it is not a joystick playable game)