We just launched our first Unity / 2dToolkit app. I realize it's a kids app, so doesn't have the appeal of a general audiences game, but at the risk of a little shameless self-promotion, it's probably one of the more popular apps released to use 2dtoolkit. Monkey Math School Sunshine has been a best seller (consistently in the top 200 overall games, and top 20 kids games) on iOS for a year or so now.
We were really pleased with 2dtoolkit. Looking forward to getting more of our apps in Unity and seeing how 2dtk develops!
https://play.google.com/store/apps/details?id=com.thup.MonkeyMathWe're still soft launched now (haven't done any promotion), I like to do that to see what bugs shake out before we start advertising.