Powerpoint Games

Discover a site which uses powerpoints to generate games for lessons - http://people.uncw.edu/ertzbergerj/ppt_games.html
One example will be what is behind the box which you can download from the link above.
Download What's Behind the Box 8
Download What's Behind the Box 16 

Instructions:
1. Teacher or Trainer places unique background images (just insert a picture and right click on the picture and 'send to back' on the pop up menu) behind four to five slides.

To Play:

1.      Divide into Teams.

2.      Each team is asked a question. If they answer correctly, the teacher clicks the Remove box button one time.

3.       This removes one box from the board, if the team can guess what the picture is correctly, they win. If they cannot guess it correctly the game continues.

4.      Once a team has correctly identified the picture, teacher clicks the next slide button in the upper right to go to the next board.

I like the big board game too - just replace the topics and the questions. 
The teams get to choose the topics and the questions.
If they get it right the points are recorded at the bottom of the board. 
Download Big Board Facts
Download Big Board Facts with Answers Slide