From Wikipedia: The Game Boy Advance and N-Gage version puts the player's Sim in a place called "SimValley" for summer holiday. Like the console version, GBA/N-Gage version gameplay is objective-based - every time the player completes a series of tasks, the game is allowed to progress. In this game, there are no furnishing objects to unlock. Instead, the player must complete all tasks to unlock new houses. Deviating from the "point-and-click" selection process heretofore used in every Sims title, this version allows the user to control their Sim directly, using the GBA's directional pad.