As it stands, not all 216 levels are currently available. Like Bulldozer, I decided to re-deploy the game as a three-parter, and each part will be free. Currently I have a 77-level version that's available for free here. In the coming months, I will be releasing Duck Tiles 2 and Duck Tiles 3, also with 77 levels each.
I'm currently still selling the full 216-level version if you just can't wait for the sequels to arrive. This version will remain available on the site until Duck Tiles 2 and 3 arrive. At that time, I'm going to phase out the commercial version of Duck Tiles, and it'll be completely ad-supported.
I hope you enjoy playing the new Duck Tiles, and please tell your friends about it. If you want to embed Duck Tiles (or any one of my other games) in your blog or web page, check out my play-n-share page here.
Happy playing!