The Sims 2: Castaway

Go to Crystal Island and send an SOS using the radio. Aliens will abduct you, give you a can of alien food, and drop you off.
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Quickly press Minus, Plus, Z, Z, A.

Pause game play, then press Z, Z, A, Z, 2 at the "Fashions And Grooming" screen to unlock a vest for a male and a tank top for a female.

Quickly press B, Z, Up, Down, B while on a lot to spawn the Cheat Gnome. It appears at different locations, depending on which island you are on, and must be found. The following codes can be enabled, which will unlock the corresponding options on the Cheat Gnome after it is found.

Make an account that has their main skill as cooking. Then, get their cooking skill up to level 6. Then get level 6 mechanical. Enable the "Maximum current food and resources" and "All plans" codes. Next, make the metal stove. Cook something random and eat it. If it increased your skills, open the screen and select "Island Travel". Travel to another part of the island. You should now have the raised skills permanently. Repeat this process to get 10 of every skill, so that you can build a bungalow, bathroom, shower, marimba, and a better bed.