The Sims™ 4, life to date, has almost 36 million players

"SimmerGeorge;c-17881050" wrote:

3. In order to play the Sims 4 on your Steam account you have to rebuy the base game (so a lot of people own the game twice).

You don't have to do that, actually. With Steam, you can register games not purchased through the store, on your Steam library. I just tried it now, and I could play the game from Steam.

EDIT: Strangely though, it won't recognize my Sims 4 game as the one in the store, so I can't review the product or any of the DLCs I have.