Alone in the Dark: The New Nightmare:

Final SaveGame 
Cheat Mode
     Add   a  Windows  shortcut  (or  modify  your  existing  one)  to
ALONE4.EXE and add "wizardmaster" to the end.
(Example: C:\ALONE\ALONE4.EXE wizardmaster) 

     Once  in the game, go to your Inventory screen and the Cheat Menu
will appear.

Bug Exploitation: "Infinite Saves"
     As  Carnby,  when  you  leave  the lobby of the manor, a cutscene
begins  and you meet Edenshaw. At the end of the cutscene he gives you
a  charm  of  saving. If you save immediately after the cutscene ends,
then  reload,  the  cutscene will begin again. Repeat. You will gain 4
saves each time.

Hex Cheat
     Open  the savegame _alone4_.XXX.sav with a hexeditor. Remember to
have  written down how much ammo you have in the game. As this far, it
seems,  that  (unlike Resident Evil) each item has a special place, so
you  cant  find the items by their code, but only by searching for the
number  of ammo. Each item has four spaces. You should start searching
for  them  from  address 0160 to address 01A0 (and maybe further). You
can  only  hex  ammo-packages,  charms  of  saving  and med packs (not
weapons  or  their  ammo ... so if you havent picked up any extra ammo
for a weapon, you wont be able to cheat it...).

     For example, you have 15 charms of saving, search for 0f00 in the
adresses  listed  above  ... its really easy. when you have found what
you think to be the item you want to cheat, enter a number as you wish
(for  example  ff00 for about 250, or the ultimate fun number for ammo
3e70).