"For where two or three are gathered together in My name, I am there in the midst of them." (Matthew 18:20)
Icebreaker games are used for breaking the awkward barriers in a group so that people are more open to each other (at least until the end of the fellowship). These activities can be used for a group of complete strangers, of acquaintances, or of a mix of the two. Of course, those who know each other well can also take the icebreaker up to a higher level so that no matter how close everyone is, people can still learn more about each other one fact at a time.