TumbleGonk is a causal ‘tile swap’ style game with polar based tile layouts that provide a unique gameplay style.
The game code is now licensed under GPLv3 with CC-BY 3.0 art.
youtu.be/6tR638VHdIo
You can find more information and get the source from the sourceforge project page http://sourceforge.net/projects/tumblegonk/
Detailed build instructions for Ubuntu and Fedora are on the wiki http://sourceforge.net/p/tumblegonk/wiki/Home/
Binaries are available for Windows on the project files page http://sourceforge.net/projects/tumblegonk/files/