Here is a pretty neat cheat to get money passively in Restaurant City in Facebook. Unlike cheat engine, this is much easier to use and understand.
Restaurant City is a Facebook game that allows you to create your own restaurant.
Description of the app on Facebook:
In Restaurant City you get to create and run your very own restaurant! Design it, decorate it, hire your friends to work in it, and collect new ingredients and menu items! Be sure to visit your friends' restaurants as well! Will you be the next Restaurant Mogul? Or perhaps the best architect in your city? Find out! From Playfish - the creators of Pet Society, Who Has The Biggest Brain? and other top-10 games!