Essence Users help towns grow by moving in residents, building businesses or houses for residents, and doing tasks for the Sims that own businesses (Commercial Sims). Tasks often involve a request for a type of furniture, with some sort of requirement for a certain amount of an essence on the item. Once you have finished building the item and complete the task, the Star Level goes up. The Star Level measures your progress in the basic completion of the game. Once you reach Star Level 5, all the residents will be as happy again, but you are still able to do anything to the town as you like.