5. Sega Activator

The Sega Activator is the ultimate full-body game controller. Really. All you have to do is set up the controller ring in a room without mirrors or a low ceiling and calibrate the machine (every time you turn it on!). Now, stretch your arms back to positions four and six, keeping your hands parallel to the ground. Good, that's like pushing the start button. Easy, right? Now—wait, where are you going? THE FUN'S ABOUT TO START!

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