Rat Shoot Level
When the fax screen appears at any point in the game, enter 7287 and then press the green button. When you complete that level, you will be taken to the special Rat Shoot bonus level.
Submitted by LiquidFox. 100% success rate. 

Level Skip
When you are on the board screen (just before the level), press the C button. Then click on the level you want to skip to.
Submitted by LiquidFox. 100% success rate. 

Cheat Mode
When at the fax machine, enter 24328 and then press the green button. Then press any of these buttons while playing:

• Get $10,000: [SHIFT] + C
• Start Earthquake: [SHIFT] + Q
• Start Emergency: [CTRL] + E
• Complete all research: [CTRL] + C
• Win current level: [F12]
• Skip to end of month: [CTRL] + M
• Skip to end of year: [CTRL] + Y

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