In October 2022, EA made the base game of The Sims 4 . That means new players no longer need a license key for the base game at all. Simply download the EA App or Steam, create a free EA account, and claim the game.

is free to download on all major platforms, meaning you generally do not need a license key to start playing the core game anymore. You simply "claim" it in the store. DLC and Kits

If you are looking to buy DLC (like the popular Growing Together or Seasons packs) or if you prefer owning a "key" rather than a direct store purchase, you have options.