How to Cheat in Doom
                              --------------------

March 25, 1994

Greetings. I am required to upload something non-illegal to the BBS to retain my
downloading privledges. I think this will be valuable enough to keep me in fair
standing. I downloaded the shareware version of Doom about a week ago. I was
very very impressed. This game breaks new boundaries in groupware gaming. This
game is much more cool than Spectre (vector graphics don't do much for me). I
will probably register the game soon.

I played the game in net mode and then played some in one player mode. I was in
the easy mode and was basically addicted to the game. At the end of the game, I
was killed several times by something which I won't mention to spoil your fun. I
then decided to pull out my disk editor and see if I could do something about
this travesty of events.

Doom and the latest series of games has the cool feature of saving a game in
progress. This little feature allows the user to do some maintenance on his/her
body while not losing precious points (the game also has a pause function, but
some people may actually have a life). Well, when you save a game it makes a
neat file called DOOMSAVx.DSG where x is 0 - 5 for the 6 different save areas.
The files are ascii files that may be edited with a disk editor (Norton is the
tool of choice for me).

After scouting around and basically plugging and chugging, and using some
methods that I have developed (an example is to save a character with as many
unique numbers as you can i.e. Ammo of 94, Health of 42, Shells of 49, etc) I
was able to find out where certain values were stored, so that I can, how shall
I put this... be able to dominate, decimate, and destroy everything in the game
(including my net partner ... no matter).

The values are stored in Hex and are byte reversed from normal appearance. An
example of this would be:

  My Ammo Number is oh I don't know - 999. In hex 999 is 3E7. Breaking that into
  bytes would make it 03 E7. The byte reversal would display it as E7 03.

The following are the locations of the various options in the game. I basically
start them off with E7 03 myself:

Armor    - Offset 86 - 87 - Armor will allow you to go past 999.
Health   - Offset 82 - 83 - Health will work at 999, but if you pick up any
                            kind of health bonus your level will drop to 199 and
                            will not go past it. Could not locate the max
                            setting for that. Also, you can still die will mega
                            health if you do something stupid like fire a rocket
                            point blank at something.
Rockets  - Offset 214 - 215 - Amount of Rockets you have
(number)

Rockets  - Offset 230 - 231 - Amount of Rockets you can have
(maximum)

Cell     - Offset 210 - 211 - Amount of Cells you have
(number)

Cell     - Offset 226 - 227 - Amount of Cells you can have
(maximum)

Shells   - Offset 206 - 207 - Amount of Shells you have
(number)

Shells   - Offset 222 - 223 - Amount of Shells you can have
(maximum)

Ammo     - Offset 202 - 203 - Amount of Ammo you have
(number)

Ammo     - Offset 218 - 219 - Amount of Ammo you can have
(maximum)

Also, now that you have maxed out your supplies, you will need the hardware to
go with it. Here are the Offsets of the weapons, just put an 01 in the byte and
the weapon will come to life (although I activated weapons 6 and 7, they would
not come to life, and I do not know why. I speculate it is because I do not have
the regular version):

Weapon 1 - Hands - Offset 170 - Always defaulted to 01
Weapon 2 - Handgun - Offset 174 - Always defaulted to 01
Weapon 3 - Shotgun - Offset 178
Weapon 4 - Machine Gun - Offset 182
Weapon 5 - Rocket Launcher - Offset 186
Weapon 6 - Cellular Weapon ??? - Offset 190
Weapon 7 - ??? - Offset 194

I have no idea of where the chainsaw is hiding.....


You can save game whenever you lose something important and fix yourself up
again. Important note: Do not use your disk editor on a stacked or compressed
hard drive. Your best bet is to copy the file to a floppy and edit it where you
know you will not have any problem and you cannot hurt anything.

I did not bother going about finding where treasure, computer map, chainsaw, or
the keys are located. You have to leave something to attain.

Then to use your game, just go into Doom and Load game. Select the game that is
the one you modified and voilla.

You can have more fun by checking out other pieces of the file, but I got past
the point I wanted to and finished the shareware version.

For those of you who do not have the means, skill, or time to make a mega -
character. I have made three (easy, medium, hard settings) starting at the
beginning of the game. Just copy the files into your DOOM directory and load
them at your leisure. Note - if you have a game in progress make sure that you
do not copy these files over it:

   DOOMSAV1.DSG  - Hard
   DOOMSAV3.DSG  - Easy
   DOOMSAV4.DSG  - Medium


I want to thank the authors of this most cool game for enlivening my miserable
existance for a while.

JR