Can You Play The Sims 3 Supernatural Without Downloading? No — EP Requires Installation

No. The Sims 3: Supernatural is an Expansion Pack (EP). It requires:

1. Base Game: The Sims 3 installed.
2. EP Installation: The EP adds ~2–3 GB of new assets (CAS items, Build/Buy objects, World: Moonlight Falls, Scripts: Werewolves, Vampires, Fairies, Witches, Alchemy, Lunar Cycle, Zombies).
3. Launcher / Origin / EA App / Steam: To authenticate license and patch.

There is no "streaming" or "cloud play" version of TS3. The game engine loads assets from local disk.

If You Mean "Without Disc"

• Digital Purchase (Origin/EA App/Steam): Download once, play offline (after online login). No disc needed.
• No-CD Patch / Crack: Illegal. Violates EULA. Risks malware. Not supported.

If You Mean "Without Internet"

• After initial install + license verification (online once), you can play fully offline. Supernatural content works offline.

Bottom Line: You must download/install the EP files (~2–3 GB). No way around it.