Once the students have mastered some simple vocabulary, I like to play a kind of "guess who" game.
On the screen, show a few numbered pictures of people wearing distinctive clothing (maybe 5 or 6 to start with).
You choose someone but don�t say who it is. Pupils must take turns to ask yes/no questions to find out who it is. For example, "Is the person wearing a skirt?" I tend to choose quite funny pictures, for example someone in an oversized hat, or someone in enormous clown trousers.
As you add more vocabulary and structures, the game can advance into more complex questions: "Is the person wearing a blue hat? / Is the person wearing stripey trousers? / Is the person wearing a long-sleeved top?" You can also increase the difficulty by adding more pictures to the screen at one time.
This is good for an online game as pupils take it in turn to ask questions, but they all need to listen to the answers if they want to be first to guess the correct answer. The person who guesses correctly is the next person to choose a secret picture, and the pupils will now question them.
Does that make sense?