This is a WWII trivia PowerPoint intended to be used for review. The categories are: Axis Expansion, Crimes Against Humanity, Significant Battles and Turning Points, Name that Guy, and Miscellaneous. The game gives a pretty general overview of WWII, though there might be a few irrelevant questions depending on what you've covered in your lessons.
I played the game by having students split into groups. They then chose a team name (preferably historically relevant) and either used an individual white board or paper to write down answers. I would ask a question, and then give the teams between 5 and 10 seconds to answer (thus giving them all a chance to earn points) by writing down their answer and then holding it up once time ran out. I could then quickly look and see what was written and write down points on the chalkboard or white board at the front of the class. This strategy kept them all actively participating the whole time, instead of having to wait to take turns as you would in a Jeopardy based game. I added incentive to the game by offering five bonus points to the winning team. This also stopped them from trying to cheat. And, in order to keep the noise level from getting out of hand, I took a point away from any team that got too noisy.