Codes
Press Ctrl + Shift + C then type in one of the following codes:-

Code Effect
rosebud - 1,000 Simoleons
hist_add - Add family history stat to current family
visitor_control - Allow visitors to be controlled using the keyboard
auto_level - Architecture tools automatically set the level as needed
water_tool - Create a moat and streams
Move_objects off - Move objects (off)
Move_objects on - Move objects (on)
lot_size (number) - Select lot Size

While playing a game, press [Ctrl] + [Shift] + C and enter "rosebud;:" as a code. Then, hold [Enter] so that "No such cheat" begins to flash. Keep the key held to gain up to 99 million simolians