I was super excited about Mobile Frame Zero, to the extent that I was sort of bummed when the Kickstarter succeeded because I loved going back for updates and seeing what people were building. I had a chance to recapture the old magic today when the rules preview popped up in my mailbox: you can grab them too, backer or no, and play games this week if you want to! It's conceptualized around Lego, but you can use whatever you want to. You aren't going to get in trouble, or anything; there's no international body that governs this.
(CW)TB