Having tapped in to the genius idea of Jenga thanks to @elvisrunner I am now going to try out two ideas by her sister, @valleseco, both based on TV game shows.
Firstly, there is Pointless. For those who haven't seen it, the aim of the game is to score least points by providing the least common answer. I am going to get the pupils to play in pairs with mini whiteboards. They will read the question, write their answer and then award the points according to my answers on the slide. If their answer isn't on the board, they will score the maximum 100. This isn't ideal but I can't see any other way round it.
Secondly, we are going to play Blankety Blank. In order to involve more of the class, I am going to have two teams of 3, with the others all being panelists. The pupils in the two teams will view the slide and write down their answer at the same time as the panelists. They will then score a point for each panellist who has the same answer. The winning team will go through to the Supermatch game. They will choose 3 panelists to write down the answer at the same time as them. They win if one of the panelists has the same answer as them.
I will let you know how it goes.