Codes:

 Level codes for diskette version. Play the first level and take the
 last three letters and replace the +++ in the list. This works with
 every level.

 2 - B14A5+++
 3 - 3B5FB+++
 4 - 0377D+++
 5 -
 6 - 0179D+++
 7 - 607AF+++
 8 - EB8FD+++
 9 - 8B8FF+++
10 - AB901+++
11 - 4B903+++