Icebreaker gives you a fun way to have fun and interact. Icebreakers are great to have pre-defined things to talk to people about. This helps eliminate awkward silences and also gives you a lot of ways to know about each other.
You can also create your own theme by going to a custom theme. You can create a theme for your own purpose like Onboarding, Week's Retro, Who's who and so on.