I usually play this as a review game before test and quizzes. This one specifically was used as a midterm review for my algebra class. The questions can easily be modified for any subject and any grade level.
I like this game because it requires a little bit of strategy from the students. The smartboard document already has all of the links set up, so you can just change the questions associated with each number. Here's how my class plays:
You can break students up into teams and I usually give each team a letter. We start by having team A pick a number. All groups have to answer the question associated with that number.
I usually give groups a couple of minutes (depending on the difficult of the question). After that period of time all groups have to hold up their answer (I give each group a whiteboard to hold up).
All groups that have the correct answer get their letter placed on that number on the Links Board. Then group B picks a number and we go through the same process.
** Now here is where the strategy comes in. The way a team earns a point is by creating a 'link' (answering two adjoining questions correctly). Therefore, teams try to pick numbers that will give them links but not give the other teams links.