- run INCA.BAT to play
- run SAVE.BAT to 'restore' game

the game gives codes after you complete some level. last two codes
should be checked from the color map (copy protection). just fill in the
six first numbers and then fill in two more random numbers (this is
cracked version - at last :) )

some keys:

  CTRL-F1   music on/off
  CTRL-F2   sound on/off
  CTRL-F3   computer sound on/off
  CTRL-F9   restore game
  CTRL-F10  quit to DOS
