These two .D64 files are Wizard and Ultimate Wizard.  Ultimate Wizard
was simply the original 40 levels, plus 60 more making a total of 100
levels.  The original 40 levels were repaired if necessary to remove 
bugs discovered later.  The disk WIZARD.D64 has the original 40 levels,
but has the new, better Construction program that came with Ultimate
Wizard (The Player program was replaced also if any changes were made
to it...).  The disk ULTWIZ.D64 only has the 100 levels that came with
Ultimate Wizard.

If you want to play Ultimate Wizard, load Wizard from WIZARD.D64, then 
select "Play the game" and press the fire button.  When it is finished
loading and asks if you want to play Beginner, Intermediate, etc.  THEN
use F9 to switch the disks to ULTWIZ.D64.  You probably won't notice any
differences until you get to level 41 (or if you use ranomizer you may get
some new levels...)

Rik          z_morganrw@ccsvax.sfasu.edu