I absolutely love games like this!
Very easy but fun concept and lots of fun when playing with friends!
I'd love to see what the campaign will bring, I'll definetly give it a try once it's out!
Maybe you could add different parts for the robots you can win.
A little bit like Metabots or LBX sort of games.
I also made a video playing your game, feel free to use it for any sort of publicity, I would be honoured if I can help convince others to play the game!
The only thing I would change, as stated in many comments, is add keyboard support. But I read you'll add it, so no further remarks on my part!
My video: