A small war game me and and my friend have been working on is out (called War on Water on Google Play ). Much of the artwork came from OpenClipart, Blendswap and has been reworked by me. I used only CC0 resources. It is impossibe to give credits to all the authors of original art so the least I can do is to share my results under the same license.

The game-play video:

http://www.youtube.com/watch?feature=player_embedded&v=GFGOmZfETqA