@Animephan100000 You'll need to buy a copy of the base game. I would suggest waiting until Black Friday week, when Sims 3 content may be 50-60% off. The EA App sells the "Starter Pack," which includes the base game, Late Night, and High-End Loft Stuff for the same price as one expansion, so $20 U.S. normally and as low as $8 when on sale. In any event, it's the same price as Late Night alone, and you get a stuff pack thrown in.
Steam requires you to own the base game in Steam in order to buy any packs there.
@puzzlezaddict Would buying the Starter Pack through the EA app cause any potential issues regarding the base game since it already exists in my game library?
@Animephan100000 I thought the issue was that the base game wasn't on your account at all. Still, it should be fine. I have several copies of the base game on my EA account, for reasons, and I've never run into trouble trying to play on any computer.
