Testing cheats

thumb|right|300px|An Example of this Cheat In Action In Sims 2 boolProp testingCheatsEnabled (true/false) is a debugging tool for The Sims 2 which is very powerful, though it can negatively affect the game. To use it, enter the prompt followed by "true", then press the shift key while simultaneously clicking on a Sim. A menu will pop up giving the player options. There are many actions possible with this cheat, including making Sims grow up, changing a Sim's aspiration, moving and deleting objects that weren't movable or deletable previously (although this can also be achieved using the moveObjects cheat), spawning cheat objects, and making Sims selectable or non-selectable. To turn the cheat off type the prompt in the cheat window with the word "false" after it.

This cheat also enables "force error". If a player uses this, depending on what they click they can delete or reset a Sim. It can be handy to reset a character if they are frozen but, unfortunately, it can also be dangerous.

Many times this cheat will cause family members to disappear. A pop-up will appear on the screen, saying there is an error with [error code], and give you three choices. No matter what you choose, the Sim you were using or interacting with disappears from the game. Rather than exiting without saving, it is possible to use the Tombstone of L and D, a spawnable cheat object accessible via this cheat. All you have to do is select 'Get Family Member' and click on the name of the missing Sim. This will return your Sim without losing your game progress.

It is possible for Sims to randomly die if you save your game with testingCheatsEnabled on. The only way out of this is to use the Resurrect-O-Nomitron to resurrect the dead Sim before another Sim dies.

In Create-A-Sim, if the the cheat has been enabled prior to entering, hidden hairstyles, clothes, eye color, make-up and skin colors can be unlocked by pressing (Shift) + N. This must be done before entering Create-A-Sim. When activated, a pop-up box will appear, informing the player that has activated debugging mode and hidden aspects have been unlocked. You can now give your Sims NPC clothes and hidden hairstyles, among other things. The cheat can be disabled by pressing (Shift) + M.

This cheat is often erroneously called "boolProp", which means "Boolean property" or "true/false". There are several cheats that start with "boolProp".

Sims 3
A similar cheat can be used in The Sims 3. By entering "testingCheatsEnabled true" you will be able to move relationships and motives up or down and remove any moodlet by ctrl-clicking it, along with all the options available when you shift-click the mailbox, just like in The Sims 2. The cheat is not nearly as powerful as in The Sims 2, but it is still the most powerful in the game.