To start the game at a specific level, make a shortcut to the POP3D.EXE file 
and add one of the following to the end of the string in the Target Properties 
box: 
-l "geometry\rooms\prisonfix"
-l "geometry\rooms\ivorytwr"
-l "geometry\rooms\cistern"
-l "geometry\rooms\palace2"
-l "geometry\rooms\palace3"
-l "geometry\rooms\palace4"
-l "geometry\rooms\roof1"
-l "geometry\rooms\cityanddocks"
-l "geometry\rooms\dirig1a"
-l "geometry\rooms\dirig1b"
-l "geometry\rooms\dirig2"
-l "geometry\rooms\dirigfinale"
-l "geometry\rooms\ruins"
-l "geometry\rooms\cliffs"
-l "geometry\rooms\solar1"
-l "geometry\rooms\moontemple"
-l "geometry\rooms\finale" 
Then start the game and select "New Game". Note: Once this cheat is used, all 
subsequent levels will have to be loaded this way because this is overlaying 
level 1 and when the level is completed, the game then automatically loads 
level two instead of the level after the one initially loaded. It does not work 
to save the game as soon as the level loads, then exit the game and restart by 
not using the cheat shortcut. 

Save Game Hex Cheats 
Saved games are the files named SAVE001, SAVE002, SAVE003, etc. in the 
directory the game was installed into (C:\POP3D, for instance). Using a hex 
editor, the following game values may be adjusted. 
First search for the all lower-case word "buffer". It will be at the end of a 
long string of paths containing the word geometry. Now count 330 more bytes 
from the end of "buffer". This location contains the amount of health the 
prince currently has. The maximum value this may be set to is hex 76. Count 
four more bytes and this location contains the maximum amount of health the 
prince *may* have. This maximum value is also hex 76. 

262 bytes past the end of "buffer" are the two bytes that enable the three 
bladed weapons and six types of arrows. Hex 1F 1F enables everything. 

238 bytes from the end of "buffer" contains the number of type 1 arrows the 
prince has. The maximum value this may be set to is hex FF (255). The display 
for the number of arrows will not show correctly on the game screen for values 

Greater than 99. 
4 bytes further contains the value for type 2 arrows. Max is hex FF. 
4 bytes further is type 3 arrows. Max is hex FF. 
4 bytes further is type 4 arrows. Max is hex FF. 
4 bytes further is type 5 arrows. Max is hex FF. 
4 bytes further is type 6 arrows. Max is hex FF. 
Sometimes the first of the six values for arrows starts 222 bytes past the end 
of "buffer" instead of 238 bytes past "buffer". Then the type 2 arrows are at 
238, type 3 four bytes from there, and so on. 

Magic Trainer Creator Cheat 
As the game moves the address for health to different places, a search can be 
done for a specific string which indicates the health value. Set the beginning 
address to 3000000 and the ending adress to 4000000. Search for 
000000240000000000000003 if the prince has 3 full bottles of elixir. The hex 24 
in the string can be set to a maximum of hex 76, which gives the prince 10 full 
bottles of elixir. This 76 should now be frozen by Magic Trainer Creator so 
that the next time it is played, it will be known what string to search for, 
e.g. 
000000760000000000000003 
However, for some reason, this doesn't always work.