I have the sims 3 base game installed but no longer have the disk because I have since installed many different expansions, sims 3 seasons being the latest expansion that I have installed. I bought the Sims 3 Worlds Bundle at WalMart which includes Monte Vista and Hidden Springs and completed the installation but when I open up my Sims 3 Seasons game and go to create a new game, in the drop down menu I only have twinbrook, sunset valley and Bridgeport to choose from. I decided to try installing the worlds over again but still I have the same problem. I guess my question is, does the sims 3 base game disk have to be in the disk drive in order to access these worlds or should I be able to access them using The Sims 3 Seasons disk? PLEASE HELP!!!