The Sims
  
Xbox
  

Cheat Mode:

  Press L + R at the main menu to open the cheat menu. Access the cheat menu 
  to enter cheat codes.
Unlock All:

  Enter MIDAS as a cheat. Start the game in Get A Life mode, get into the hot 
  tub with the girl, then press Start and quit without saving. This will unlock 
  all two-player games, all locked objects, and all locked skins. Ta Da!
Everything Is Free:

  Enter FREEALL as a cheat. Everything will now cost 0 Simoleans. Warning, can 
  mess up your game if you save. Use with caution.
The Party Motel:

  Enter PARTY M as a cheat. Party Motel 2-player game now available. 
Original Sims:

  Enter SIMS as a cheat. Play the open-ended Sims game like on the PC. 
First-Person:

  Enter FISH EYE as a cheat. Press X to change views.


Life of Crime:

  Catch a thief in Get A Life mode to unlock the Life Of Crime career! 
Get Probed:

  Buy a telescope and use it a lot. Your sim will be kidnapped by aliens. They 
  will be returned later, but they will be slightly different.
 
Thanks to Revolution readers Tony Thigpen, Roro, Ian Dryburgh, Quadflare, David 
  Connolly, Dalmvern and Jake Miller!