I use this game fairly often, students like it, even adults. You can practise any grammar structure with it, this one is for reported/embedded questions. They call out coordinates by making correct sentences like "I wonder where the post office is" or "Would you mind telling me if Brad Pitt is single?" You can alter it to suit your needs for the grammar you want to practise, you can add more lines to it so it will take longer to finish the game or just use it as it is.