I added a thing for making an even Excel/word styled grid. It is really easy but I never realized you could do it until recently. If I had it would have made a lot of my stuff much cleaner looking.
I'm sure you can find this information on the internet but I figured I'd post this here. I love power point point games. Very simple to make, simple to edit and kids love them.
This might also help you edit other people's powerpoints.
I hope these instructions make sense.
This is using powerpoint 2010 and beyond. Before that I've no idea.
Added making bombs for minus points.
UPDATE. I've added a powerpoint with some suggestions for adding audio or video. I hope it makes sense. I whipped it together pretty quickly. The main thing to note is you need to WAV files for most audio stuff in powerpoint. I don't use videos much with powerpoint so I don't know a lot about that.