I've made an effort searching on both the forum and on Google but failed to find any open-source projects using 2D Toolkit. Even the Ludum Dare projects don't have their sources available. I don't know about you guys, but I usually learn a lot by simply exploring free projects and reading through the code itself.
The only one I really know of is the Demo projects that bundle with toolkit, and the Whack a Mole from the documentation's tutorial. So I found I should ask if anyone knows of more projects that are using 2D Toolkit and are open source, and if there are we could possibly start maintaining a list here