As a parent, I've been really hesitant about game consoles. With two children under 8, I have seen the impact of too much screen time – and it's already a battle to get them off their tablets or the TV. So let's say I was skeptical when my family tried out the Nex Playground . I really didn't want to add another device into the mix. But I was aware there was something a bit different about this one and decided to give it a go. The Nex Playground is an active gaming system (and it's currently 20% off at Amazon, FYI) . It is a small cube with a camera that tracks your movement, so you can play a host of games with your whole body. Unlike the Nintendo Wii (which, as we all found out, you could lie down and play with a flick of the wrist), you actually have to stand up and play properly. It turns out that this is transformational for how (my) kids engage with the whole process of gaming.…