Thank you for the kind words! It's really appreciated :)
Because our team was really split into Art/Programming, we can only blame the programmers (and I am one of them ^^) for the lack of gameplay content.
But we learned a lot about the Unity process we could use next time and we know where we shouldn't have gone to get more things done.
And I totally get your point, I am personally frustrated we couldn't add more things and the game feel a little shallow. But we will improve all lot of stuff as you probably read in older comments. We are hard at work to polish the game and hopefully you'll enjoy it even more!