i like the idea, there actually seems to be a meaningful use of powerpoint. ;)
A downloadable game
This game is probably the only one of its kind. I made it using exclusively Microsoft PowerPoint's animation system, using hyperlinked objects for player interaction. It's more of a linked visual novel than a "game" per se, but it's quite unique and I think interesting in that regard. I used to make games in PowerPoint like this when I was little, so I made this one last year in the style of those games I used to make.
There are 6 different endings, and each give you a different poem or excerpt of a poem by Robert Frost.
When you open the PowerPoint file, click on the "slideshow" button. Be patient and watch the animations. Read what the game tells you and listen to instructions.