How to Become a Vampire in Sims 3: Late Night

Find a vampire. Vampires rarely come out during the day, so the easiest way to do this is by exploring your town at night. If your town has a vampire lounge or other dance clubs, visit those regularly. These dance clubs are only open in the evening when everything else is closing, making it the perfect hangout for vampires. You can tell a Sim is a vampire by their glowing red eyes and fangs. They may also try to hunt you if hungry, which will give you a negative moodlet.

Befriend the vampire once you meet them. This can be done by clicking on the vampire and choosing any of the friendly interactions. Continue to do this until your friendship meter at the top left side of the screen changes from "Acquaintances" to "Friend."

Click on your new vampire friend. There will now be a new option when you talking to them, called "Ask to be turned." Click on this.

Wait for the vampire to bite you. You will get an event at the top right hand corner of your screen letting you know it's worked. You won't become a vampire right away, but the process has been started.

Wait a few sim days. You will periodically get an event at the top of your screen telling you that your Sim feels weird. This is normal. After a few more days, you will get the following event, "I feel as if a part of me has died, yet every other fiber of my being is raging with vitality, I crave something, yet I don't know what..." Red smoke and bats will then surround your Sim and when it clears they will be a vampire.