Bristol-based Reach Robotics are making these ridiculously cool remote controlled robots you command by using your smartphone. Or at least they will be if enough people are interested in their upcoming crowdfunding campaign.
You fight Mecha Monsters against one another in real life, and as they battle you gain experience that allows access to special moves and unlockable items. If you're of a tinkering mind, you can also program custom motions by using some included software.
Mecha Monsters look super cool. For more details check out the official website.