Easy skill points and levels:
Gain a level and wait for the screen with the perks to appear. Highlight the perk and click "Done" on the perk screen. However, click "Cancel" on the main screen. Click back to the character screen and the perk screen will appear again. Repeat these step to gain unlimited levels and 99 skill points.

Extra items:
Go to either shop in San Francisco. Buy whatever you want, but pay for it in cash. Then, walk up behind the shop owner. You can steal your money back, plus his own.

Getting more items in the Den:
Start a new game with a female character named Buffy. Get past the Temple Of Trials and go to the Den. Talk to Rebecca. She will say that she recognizes you and give some items.

Unlimited experience:
Note: This trick can only be done on games that have not been patched to v1.02 or higher. Go to NCR and go right to the power plant and talk to the girl. She will ask you to talk a man out of blowing up the power plant. However, when you talk to him allow him blow it up. The girl will want you to fix the reactor. Do it and she will give you some manuals. You can keep repairing the reactor and keep getting science and first aid books from her. Every time you fix the reactor, you will get 3000 experience points.

Alternate desktop icon:
Create a shortcut to the game on the Windows 95/98 desktop. Then, use the Settings/Control Panel/Display/Effects options to turn on "Large icons". The desktop icon for the game will turn into a new graphic.

Original Fallout screensaver:
Access the PipBoy and stay at that screen to eventually see the old Fallout screensaver on the PipBoy screen.

Programmers' comments:
Hold [Shift] and click on the "Credits" button to hear various comments from the development team.

Unlimited money:
In San Francisco, go to the Red 88 gun store and steal all of the owners money (usually a couple thousand). Go to the item store across the street and steal all of his money. Then leave the city for a couple days (or a week in pipboy time). Then, return and once again steal the money that they have. This trick can be done as many times as needed.