Congratulations to that very nice and useful game! I loved to play around with the first 2 levels. It's a pity that the project's state is totally unclear (at least to me, a casual visitor). Is it meant to become a community project? Is it a demo of something that will be sold in the future? The explaining text behind the "Unlock Levels" button adds even more confusion: > Additional levels are currently being develop…
Not to mention that this all goes against free software values, in a game that touts "the power of open source".
Only it should be mentioned clearly.