To bring down the console press Ctrl Shift C during the game. Now enter any of the following codes:
Motherlode - 50,000
Kaching - Adds 1,000
Help - Lists common cheats
Exit - Close dev window
Expand - Enlarges dev window
boolProp snapObjectsToGrid true/false - Snap/unsnap objects to grid
Moveobjects on/off - Move objects anywhere
Aging on/off - Sims cannot age those freaks
StretchSkeleton - Change Sim's height
Vsync on/off - Increase graphic performance lowers textures
faceBlendLimits on/off - Face stretching is not limited
deleteAllCharacters - self-explanatory
TerrainType desert/temperate - Terrain selection
boolProp simShadows True/False - Shadows on or off
boolprop displayNeighborhoodFlora True/False - Plants on/off
boolprop displayNeighborhoodRoads True/False - Roads on/off