Allows the main resident to be allowed alot more capabilities and to gain more rewards when shaking trees or hitting the rocks. I love the game but being the "guest" on the island really puts me down especially watching her be able to access everything first and I get left with the scraps of everything thats left. Was playing for a whole day and wasn't able to collect any oranges unless I purchased them. Was collecting all day and consistently selling items to save up for a house, then she gets on first thing in the morning and is given a house on the island to pay off?? What is that about. I'm already frustrated enough to stop playing completely until I buy a new switch so very disappointed in this $60 purchase.