Two games -- well assuming these are MAMEd and run on a powerstrip inside the cabinet, just get a surge protected one for each cabinet just in case. I dont see why you're debating this. Sure, its probably safe, why wouldnt it be, but come on, when you can get a surge protected strip for ~$5 locally, its really no comparrison. Also, yes games take power when the button is off. Power is still running to your computer. On my motherboard right now, even when you shut off the computer, it has a "POWER SUPPLIED" light in there and that is basically there to remind you that there is power still going to your system. Basically, unless you disconnect the power from the source, your cab still uses power (TVs need to know when you press the power button on your remote, motherboards need to power USB devices.....)