Nokia wrote:

“Playing Addix is a lot of fun, and a big plus here is that you are actually working your brain too. Two for one! To be dead honest, I had trouble writing this review because I kept getting sucked into another game of Addix. Be forewarned: You will get sucked in, too!”

And they had much more to say! Read the full review here!
http://blogs.nokia.com/dailyapp/2010/03/addix-really-is-addictive-on-nokia/