How to celebrate birthdays in The Sims 4. Let’s take a look at how to celebrate birthdays in The Sims 4 .
1. After the cake is ready, click "Cake" and select "Put Birthday Candles"
2. This way you can see the birthday candles on the cake.
3. Click "Cake" and select "Celebrate"/"Blow out the candles"
4. The message "The player character is one year older" pops up. This is how I celebrate my birthday