Happening is not your average, single-purpose app. It contains a wide variety of tools and games for groups:
Photo Hunt Race your friends snapping the themed selfie of the day.
Selfie Time See what your friends are doing right now.
Ranking Game Rate your friends and predict how they'll rate you.
Sketchy Guess your friends' sketches and make your own.
Betrayal Make allies and betray them, to win this Risk-like game.
Split the Bill Easily track and settle expenses among groups of friends.
Event Planner Quickly poll a date and see who's coming.
List Share lists of tasks, groceries, notes, ideas, wishes, etc.
What do you think?