Simlish

Simlish is the language of the Sims. Some say it may be a mixture of Ukrainian and Tagalog, but this has not been confirmed. It might be possible to understand by studying the Sims' speech in certain situations. There isn't an official Simlish dictionary, but a good dictionary is found here. It is assumed that Simlish is the official language of SimNation. Sometimes we can hear also french phrases as "bonjour".

SimCopter
SimCopter is the first game where they speak Simlish.

The Sims
This, having a lot more than SimCopter, was also a lot clearer. Common phrases "ralalalalib bubaya" and "o frazinnratt" This was created because EA couldn't change the Sims' language to the player's language due to limited budget and it will make them repetitive.

The Sims 2
The Sims 2 comes with better heard and newer phrases like "e wam". Common phrases are now "dej dej" and "ackabunad." Common greetings include "zune-zune" and "degg degg". When there's a problem, they will say "Shoo Flee" and "anaconda" a lot. When some female Sims walk by another sim, their greeting will be "Ooh, voodoo!" Sometimes they'll say "Lick a rock!". When child female sims drink juice, they sometimes say "Green iguanas fluing in the sky." They reportedly swear sometimes. Much to the amusement of many players, pregnant Sims have been known to shout "WooHoo!" while giving birth.

When female elders play at the poker table, they will usually says "Texas Goushem" which is probably a reference to Texas HoldEm (a type of poker card game).

The Sims 3
The Sims 3 has the most. Common words are "teg teg", "swebsi madoo", "abondandlain... en som?", "hubble herni", "etne condoroley","shawbo glub", "zwitz zorg", "tippaha yooredful", "shabow" and "ibzy biz ochoy". The Sims 3 is also the first Sims game where you can adjust the Sim's voices to exactly how do you want them to sound.

Videos
These are the few examples of the simlish version music videos. Video:Nelly Furtado - Manos Al Aire (Simlish)|From The Sims 3 World Adventures Video:Natasha Bedingfield - Pocketful Of Sunshine (Simlish)|From The Sims 2 FreeTime Video:Datarock - Fa Fa Fa (Simlish)|From The Sims 2 FreeTime Video:Katy Perry - Hot n Cold (Simlish)|From The Sims 2 Apartment Life