Here’s my first Unity project. I made it mostly to learn Unity, but among the friends I abused for beta-testing, several have said it’s great fun:
http://web.lemuria.org/~tom/unity/Cubethrow.html
Tell me what you think. And what needs more polishing. 
It’s a good game but to make it even better add sounds and make some more penalties when a cube drops. 
I’ve thought long and hard about sound. Then decided that for a browser game, it might be better to leave it out, thinking about from where people play them (office… ehem…)
Plus, I suck at audio, so better no sound than bad sound.