You can either choose from infinite number of categories such as cinema/movies, celebrities etc. or try to answer the questions chosen from all these categories ("Select All" category) or chosen by the application itself randomly ("Random" category). Have fun when both you describe and find out.
With "Quick Play" menu, you can quickly see the category select screen and start the game.
With "Versus" menu, you can choose the number of teams and rounds and start the game later.