Diablo Codes -

Duplicate items:
Place an item in your belt. Take the item to be duplicated drop it on the ground. Walk away, then click on the item again. As you pick the item up, click the Left Mouse Button on an item in your belt immediately before taking the item on the ground. If timed correctly, the name of the item that was duplicated will appear in the box down below. It will have the same appearance as the item on the belt that was clicked on. Drop the item on the ground or place it in the back pack and it will re-appear correctly. However, do not create a second item of the same type and put both on the ground. If this is done, the duplicate item will be destroyed.

Duplicate large items:
Put the item to be duplicated on the ground. Put a mana potion or another item on your belt. Walk a few steps away, then click on the item on the ground. Right when you pick it up, click on the item placed on your belt. Drop it on the ground. If timed correctly, it should turn into the item to be duplicated, and the original one will be in your inventory. This also works with money. Do not put both the duplicated item and the original item on the ground,or one will disappear. Note: This cheat will not work if the inventory window is open.

Buy any magic book easily:
Go to Adria's hut and buy whatever magic item that you desire. Save, and load the game again. Adria will have restocked her items. Note: The old items will no longer be there. Make sure you buy the item that you want the most when it appears before saving and reloading.

Cow comment:
While in town you can find some cows near the upper bridge to Adria the witch's hut. Click on the cows and they should moo. Keep clicking on the cow and your character will eventually should say something similar to "Yes, that is a cow".

Start stronger:
After starting a new or saved game play until your character gets to a level status that you want. Save the game and click "New game" Click on your character, then click "OK". When the screen appears again, do not click on "Load Game". Instead, click on "New game" to start with all your stats and items intact from the previous game.

Customize hot key messages:
Note: This procedure involves editing a game file; create a backup copy of the file before proceeding. Use a text editor to edit the "diablo.ini" file in the game folder. It contains the hot key messages that can be changed.

Defeating Zhar The Mad:
Walk towards a corner. He will follow and appear in front of you. Trap him in the corner. Hit him every time he appears, since he will be still trapped in the corner. If done correctly, you should not use any energy.

Killing groups of monsters:
Get the Fire Wall spell from the Adrea the witch. Make two walls of fire wall, side by side. Run away in the opposite direction of the monsters. If positioned correctly, they will run through the fire walls and be killed.