Pizza Tycoon Cheats
Get a better Underworld rank
Use a character with a lot of money. Phone the Joke Article Shop. Buy 1 lemon flavor ice-cream, and then sell it. If you repeat this around 15 times you will get a better rank.
Get a better Underworld rank 2
Buy a lot of "Ice Cream" and that will boost you, but make sure you use your "Ice Cream". After you get the "It's 9 p.m. and all the restaurants are closing" message, click on another person's pizza place. You will get an option to use any "Ice Cream" you may have. Once you use it, keep doing so and your status will keep increasing.
To get real weapons when you dial up a joke store using the terminal, ask for ice cream. The various flavors are actually weapons: Lemon: Bombs; Vanilla: Flame throwers; Strawberry: Bazookas; Chocolate: Poison