Actually why would you think a Windows app wouldn't run on that ATM? I'd bet most would. It's probably a normal PC, with all the normal hardware. It would be slow, because it's most likely a slow one with no GPU acceleration and such, but I wouldn't be surprised if 95%+ of Windows apps ran on it. The only reason you, yourself couldn't test it is because they (obviously) run their own ATM software full screen and block you from installing stuff. But why wouldn't you think an ATM admin couldn't fire up Solitaire on it?