"The Sims 2: University" is the first expansion for "The Sims 2." The game introduces Young Adult status, a college system, and Greek Houses as an option for college life. However, the game has its own Maxis Greek Houses twist. Both men and women can join the same Greek House, which would not happen in real life.
How to Make a Greek House | The Sims 2 | Tutorial
A Sim who is renting or living in a dorm can join a Greek house by using the Ask to Join Greek House option on the phone. Members who live in the Greek house will come over. Your Sim must earn a certain amount of relationship points with each member. The easiest way is to call each member and develop a friendship before calling to ask to join the Greek house. If you are already friends with the members when they come over, you will be accepted once they arrive. If you do not have the phone option, your university probably does not have a Greek house.
Greek House members do not have to live in the House. They can still live in a dorm or a rented house. It is a great advantage for your Sims living in the Greek House to ask Sims to take a pledge. During the pledge period, Sims can influence the pledges to do whatever they need. Pledges can usually do two papers during the pledge period if you let them start right away.
Greek House members ask potential pledgers to pledge by using the Ask to Pledge menu item when the Sim is visiting the Greek House. Outgoing pledgers need a daily relationship score of 40 and a lifespan of 5, while shy Sims need a score of 50 and a lifespan of 10. If you don't know the personality of the prospective pledger, wait until the Sims are friends. This way, you won't lose any points for refusing to pledge.
