Cirondo
My friend Harry showed me an interesting board game recently. It’s called cirondo. As far as I know it is no longer produced but it can be ordered here: cirondo.de
Here’s my (low graphics) Flash version: Cirondo (Flash, AS3)
The game should be quite self explanatory the way I made it. Possible moves are highlighted as soon as a stellar is selected. A sun comes into game when a moon reaches the center circle.
I don’t have permissions from the authors of the game … let’s see what happens 
If anyone is interested in the sourcecode, please contact me. I’m also planning to do an iPhone/iPad version of it.