SimCity cheats and cheat codes for Nintendo Wii

Unlock Las Vegas Scenario:
To unlock the Las Vegas scenario, you have to finish 6 game scenarios and 
have minimum 1 town with over 100,000 citizens living in it saved to the 
game. 

Unlock Freeland: 
Finish the Las Vegas scenario 

Get away with not paying funds
Before use this trick, you have to turn OFF the Auto-Budget option.
When the Budget screen appear at the end of the year, set all funds to 0%. 
Then select "Go With Figures" and immediately save the game. When you reload 
your saved game, the game will continue as if you set all funds to 100%, but 
you weren't charged for them on the budget.

Get $999,999:
Spend all of your money on the city. When the tax screen appear at the end 
the year hold down L. Select "Go With Figures" option and then jump back to 
the tax screen. Turn all of the dues to 100% and exit still holding L. 
Then, release L to get the maximum money.

Unlock 999 extra city maps
There is normally only 999 city maps. To unlock more, begin a new city, and 
select any map number, then start the game. There is "Go to Menu" icon at top 
of the screen. Select it, and select Start New City without saving.
A few minutes later the map will change, but the number wont.