This offer is no longer availble
There are a number of free trophies for your Sims 4 game for Sims 3 players that you can place in your house as decoration
(Source: The Sims 4 Rewards )
What are the Sims 4 rewards ?
The Sims 4 rewards are plumbob statues, that are unlock automatically in your game if you have Sims 3 games registered to your Origin account.
How do I get those rewards ?
You need to have your Sims 3 games registered to the same Origin Account you’re registering the Sims 4 to. The Sims 4 will then know which Sims 3 games you have and will automatically unlock the content in your game.
There’s nothing else you need to do then make sure you have your Sims 3 games registered.
How do I know which rewards I’ll get ?
You can find out which rewards you’ll get today. Go to this site: The Sims 4 Rewards and click on the button on the bottom of the page.
to see what you qualify for (you might need to login to your Origin account)
How many rewards are there ?
There are 13 reward statues: 1 for the Sims 3 base game, 11 for each add-on and 1 if you own everything. There are no rewards for stuff packs.
How long does this campaign last ?
The campaign lasts until December 31st 2015. Until then you need to register your Sims 3 games as well as Sims 4 with Origin.
You can unlock the rewards later if you decide to buy an expansion pack later.
What do I do if I have troubles registering ?
If you didn’t register all your Sims 3 games on the same or account or if you have troubles registering them, you need to contact a Game Advisor for further help.