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You might be right about GetAsyncKeyState not running on a Mac or Linux. I haven't actually tested it. I think I figured it'd run regardless of which system because, hey, it's just PowerPoint we're talking about here. 

Oh ok.

 Also, are you gonna continue using PPT or are you gonna move on to something else?

Definitely something else. Unless I need some more VBA experience to put on my resume (which is why I made this particular game in the first place), I don't see any reason to go back to PowerPoint for my game making needs.