Tekent is a fun game you can play with your friends locally via your iOS devices.
It requires one iPad as a host and iPhones as players.
The iPad picks a player whose turn it is to draw, the iPhone shows the word you have to draw. Then you pick up the iPad to draw the word, everyone will see your drawing appear on their phones and have only one chance to guess what it is for a point.
Good luck and happy drawing :)