From the betaworks weblog:
Dots has been downloaded 1 million times, has become the #1 app in 8 countries, and is a top 5 app in 15 other countries.
My girlfriend and I have been playing this game with every minute of downtime that we have. It’s very fun and very addicting. I would love to see more gameplay modes (like longer rounds) or new power ups but it’s easy to see why the game has become so popular.